{"id":10977,"date":"2026-03-16T08:23:44","date_gmt":"2026-03-16T08:23:44","guid":{"rendered":"https:\/\/fsxchemical.com\/?p=10977"},"modified":"2026-08-29T08:46:27","modified_gmt":"2026-08-29T08:46:27","slug":"salt-alkali-temperature-cms-printing-paste-viscosity","status":"publish","type":"post","link":"https:\/\/fsxchemical.com\/ur\/blog\/salt-alkali-temperature-cms-printing-paste-viscosity\/","title":{"rendered":"How Salt, Alkali and Temperature Affect CMS Printing Paste Viscosity"},"content":{"rendered":"<p class=\"wp-block-wd-paragraph wd-e30c5dd7\"><em>Salt, alkali and temperature can all change the apparent viscosity of carboxymethyl starch (CMS) printing paste, but they do not act through one simple rule. Salt changes ionic strength and can alter polymer-chain expansion; alkali changes both pH and electrolyte level; temperature changes molecular mobility, hydration rate and the viscosity measured at that moment. The response also depends on CMS degree of substitution, molecular weight, concentration, substitution distribution, water quality and holding time. This guide shows textile mills how to separate these variables, build realistic salt\/pH\/temperature response curves and evaluate the complete printing paste before changing CMS grade or dosage.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-773a5f8e\">Why CMS Printing Paste Viscosity Changes After Formulation<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2120080a\">A CMS supplier may report viscosity under a controlled test such as a defined CMS concentration in water at 25\u00b0C. That number is useful for incoming quality control, but it does not describe every printing formula.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-34df3927\">Production paste can contain:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dyes or pigments<\/li>\n\n\n\n<li>Salts<\/li>\n\n\n\n<li>Alkali<\/li>\n\n\n\n<li>Acids or buffers<\/li>\n\n\n\n<li>Binders<\/li>\n\n\n\n<li>Reducing or oxidizing auxiliaries<\/li>\n\n\n\n<li>Dispersants<\/li>\n\n\n\n<li>Softeners and other additives<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7c95791a\">These ingredients change the chemical environment around the CMS polymer.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-eee15e6b\">At the same time, operators may prepare or store the paste at a temperature different from the laboratory test temperature.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-66bc0cfd\">The resulting viscosity is therefore a system property:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-78619d31\"><strong>CMS Grade + Concentration + Water + Salt + pH\/Alkali + Temperature + Shear + Holding Time<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bfc7c13d\">This is why two factories can receive the same CMS batch and report different viscosity behavior.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-361ff335\">CMS as an Anionic Polymer: The Basic Mechanism<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f20f0a6b\">Carboxymethyl starch contains carboxymethyl groups that can carry negative charge in suitable aqueous conditions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c9ef8342\">This makes sodium CMS an anionic polymer whose chains respond to the surrounding ionic environment.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f9da4c87\">Polymer-chain behavior is influenced by:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Electrostatic repulsion between charged groups<\/li>\n\n\n\n<li>Hydrogen bonding<\/li>\n\n\n\n<li>Water-polymer interaction<\/li>\n\n\n\n<li>Counterions in solution<\/li>\n\n\n\n<li>Polymer concentration and chain overlap<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8cc2229d\">Changing salt, pH or temperature changes one or more of these interactions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-37d91adf\">Published CMS studies confirm that viscosity can respond to temperature, pH, electrolyte concentration, degree of substitution and shear rate.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1b9deca0\">The important production lesson is that CMS viscosity should be treated as formulation-dependent rather than as a fixed property printed on a TDS.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-8c18441e\">1. How Salt Affects CMS Viscosity<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-44aa27ba\">Adding salt changes the ionic strength of the CMS solution.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-69195e36\">For an anionic polymer, dissolved ions can screen electrostatic repulsion between charged polymer segments.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-36094404\">This can change:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Chain expansion<\/li>\n\n\n\n<li>Hydrodynamic volume<\/li>\n\n\n\n<li>Apparent viscosity<\/li>\n\n\n\n<li>\u0634\u06cc\u0626\u0631 \u0631\u062f\u0639\u0645\u0644<\/li>\n\n\n\n<li>Solution stability<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-77fb04cd\">Some CMS grades show a significant viscosity decrease after sodium chloride is added. Other modified CMS structures can show better salt tolerance.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-62d2a8df\">A study of mechanically activated cassava CMS reported high sensitivity to NaCl for that specific product, while research on acetylated CMS showed that structural modification could improve viscosity stability and salt tolerance.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7cefd62c\">Therefore, the correct conclusion is not:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d0c0003f\"><strong>\u201cSalt always causes the same percentage viscosity loss.\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-dd756f46\">It is:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d04bb922\"><strong>\u201cSalt response is grade-specific and should be measured at the concentration used in the actual printing paste.\u201d<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-ab84baa0\">Why Salt Type and Ion Valence Matter<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-3daf48e2\">Not all salts create the same response.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-49488cab\">Variables include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cation type<\/li>\n\n\n\n<li>Anion type<\/li>\n\n\n\n<li>Monovalent vs. multivalent ions<\/li>\n\n\n\n<li>Total concentration<\/li>\n\n\n\n<li>Water hardness<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fe73c3a2\">Sodium chloride is useful for a standardized screening test, but a production formula may contain sodium carbonate, sodium bicarbonate, sodium sulfate, calcium, magnesium or other ionic species.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5eed52c1\">A result obtained with NaCl therefore does not automatically predict the response to every other salt.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-242ec0b3\">For textile formulation work, use both:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A standardized salt test for supplier comparison.<\/li>\n\n\n\n<li>The actual production electrolyte package for final approval.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-a1655906\">2. How Alkali Affects CMS Viscosity<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d9129a86\">Alkali creates a more complicated change because adding an alkaline chemical usually changes both:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u067e\u06cc \u0627\u06cc\u0686<\/li>\n\n\n\n<li>Ionic strength<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-1349c59c\">CMS carboxyl groups change ionization state with pH.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-742ba476\">At low pH, more carboxyl groups can become protonated, reducing charge repulsion and changing solubility or chain expansion.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5a7940b8\">As pH rises into a more favorable region, ionization can increase and the polymer can show a different hydrodynamic state.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-baedde01\">However, adding more alkali also adds counterions and increases ionic strength.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fb0a305f\">At stronger alkaline conditions, selected CMS grades may therefore show viscosity loss, instability or a different rheological profile.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b3cf92b3\">One published cassava-CMS study found the highest paste viscosity near neutral conditions for that particular sample and reported limited resistance to both acid and alkali. Another recent sodium-CMS rheology study reported a viscosity maximum around mildly alkaline pH for its tested polymer.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d9124957\">These different results reinforce the correct rule:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-339fb748\"><strong>There is no universal \u201cbest pH\u201d for every commercial CMS grade.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-44bb27f2\">Separate the pH Effect from the Ionic-Strength Effect<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-48d17f31\">This is one of the most important laboratory controls.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cbd08e4a\">If sodium hydroxide is added and viscosity changes, the operator may say:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-24cb358d\"><strong>\u201cCMS is unstable at this pH.\u201d<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cc12a70b\">But two variables changed at the same time:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The pH increased.<\/li>\n\n\n\n<li>The sodium-ion concentration increased.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8d25662f\">To understand the cause, a technical lab can compare:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CMS at several pH values with controlled ionic conditions<\/li>\n\n\n\n<li>CMS at similar ionic strength but different pH where practical<\/li>\n\n\n\n<li>The actual production alkali package<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-04486cbe\">For normal mill QC, the objective is not to perform academic electrochemistry.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7e623778\">The practical objective is to avoid blaming \u201cpH\u201d when the real issue may be electrolyte loading, addition order or local high concentration during alkali dosing.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-14ebd40e\">3. How Temperature Affects CMS Viscosity<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-03d03a3a\">Temperature directly affects the viscosity measured at that moment.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-08ac0713\">As temperature increases, molecular motion increases and many polymer solutions show lower apparent viscosity.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-68fc8e50\">Recent sodium-CMS rheology work reported a clear viscosity decrease as temperature increased for the tested grades.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-27dceae4\">Another study of mechanically activated cassava CMS found the paste relatively stable between 25\u00b0C and 40\u00b0C, followed by a gradual decrease above 40\u00b0C for that specific sample.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-08ed9381\">These values should be treated as research examples, not universal CMS specifications.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-32ab810a\">A commercial CMS can have a different:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0688\u06cc \u0627\u06cc\u0633<\/li>\n\n\n\n<li>Molecular weight<\/li>\n\n\n\n<li>Raw starch source<\/li>\n\n\n\n<li>Purification level<\/li>\n\n\n\n<li>Structural modification<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2d360d53\">Therefore, every viscosity comparison should use a defined measurement temperature.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-9a168e7e\">Instant Temperature Effect vs. Long-Term Stability<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6ba8f28d\">Temperature testing should distinguish two different questions.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-ad9801b7\">Question 1: What Is the Viscosity at the Higher Temperature?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cfb70714\">This measures the immediate thermal effect on flow.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-fc98ea46\">Question 2: Does the Paste Return to Its Original Viscosity After Cooling?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a8f841c6\">This checks whether the change was mainly reversible or whether prolonged heat exposure changed the system more permanently.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ab18fc91\">A useful test is:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8fe3c985\"><strong>25\u00b0C Initial \u2192 Heat to Target Temperature \u2192 Measure \u2192 Hold for Defined Time \u2192 Cool Back to 25\u00b0C \u2192 Recondition \u2192 Measure Again<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9ce0a27b\">If viscosity returns close to the initial value, the change may be mainly a reversible temperature effect.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b1633851\">If it does not recover, investigate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Polymer stability<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u067e\u06a9\u0691\u0646\u0627<\/li>\n\n\n\n<li>\u067e\u06cc \u0627\u06cc\u0686<\/li>\n\n\n\n<li>Salt concentration<\/li>\n\n\n\n<li>Evaporation<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c47f7d2d\">This test is especially useful when production mixing heats the paste through mechanical shear.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-bdee89d4\">How Degree of Substitution Changes the Response<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-02f772ca\">Degree of substitution (DS) changes the number and distribution of carboxymethyl groups on the starch structure.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b0922b53\">This affects:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Water compatibility<\/li>\n\n\n\n<li>Charge density<\/li>\n\n\n\n<li>Salt response<\/li>\n\n\n\n<li>pH response<\/li>\n\n\n\n<li>\u0631\u06cc\u0648\u0644\u0648\u062c\u06cc<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5f1247a4\">CMS studies with different DS have shown different viscosity and stability behavior.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-32c5be29\">This means the response curve for one CMS grade should not be copied to another grade simply because both products are called carboxymethyl starch.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cf163640\">FSX Chemical&#8217;s current CMS guidance similarly recommends evaluating DS, viscosity, water quality, dyes, auxiliaries, pH and the complete formulation together.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-6257de48\">Molecular Weight and CMS Concentration<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e1b4fbde\">CMS concentration can dramatically change the baseline viscosity and the way chains overlap or interact.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5aafd1e7\">Molecular weight influences the thickening efficiency of the polymer.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-88ba44a7\">Therefore, salt or temperature response measured at one concentration may not transfer directly to another concentration.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-51ad4ccf\">For supplier comparison, keep constant:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CMS concentration<\/li>\n\n\n\n<li>Water-to-powder ratio<\/li>\n\n\n\n<li>\u06c1\u0627\u0626\u06cc\u0688\u0631\u06cc\u0634\u0646 \u06a9\u0627 \u0648\u0642\u062a<\/li>\n\n\n\n<li>\u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a<\/li>\n\n\n\n<li>Viscosity method<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ad5c8837\">If Grade A is tested at 5% and Grade B at 8%, the absolute viscosity values should not be compared as if the test conditions were identical.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-1c0eabb4\">Water Quality as a Fourth Hidden Variable<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b3745f1a\">Plant water already contains dissolved ions before any deliberate salt or alkali is added.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5d4c0efd\">Hardness, conductivity and pH can therefore shift the starting point of every CMS formulation.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b1b898a1\">If the same formula behaves differently in the laboratory and production, compare:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Deionized\/reference water<\/li>\n\n\n\n<li>Actual plant water<\/li>\n\n\n\n<li>Total hardness<\/li>\n\n\n\n<li>Calcium and magnesium<\/li>\n\n\n\n<li>Conductivity<\/li>\n\n\n\n<li>\u067e\u06cc \u0627\u06cc\u0686<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-22e21281\">Otherwise, an apparent \u201csalt tolerance\u201d problem may partly be a plant-water problem.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-557fd3b3\">Why Salt, Alkali and Temperature Must Also Be Tested Together<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7f8aa9a9\">One-factor tests are useful for understanding mechanisms, but production uses multiple variables at the same time.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5f147c25\">For example:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-94676dff\"><strong>CMS + Plant Water + Alkali + Salt + 35\u00b0C Mixing + 4-Hour Holding<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-40b91311\">may behave differently from:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-07be1985\"><strong>CMS + DI Water at 25\u00b0C<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a1e8faca\">even if both samples started with the same CMC concentration.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2e75bc92\">After individual screening, always test the realistic combination.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d8481d79\">A practical qualification matrix may compare:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0646\u0645\u0648\u0646\u06c1<\/th><th>\u067e\u0627\u0646\u06cc<\/th><th>Salt<\/th><th>Alkali<\/th><th>\u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a<\/th><th>Purpose<\/th><\/tr><\/thead><tbody><tr><td>A<\/td><td>Reference<\/td><td>None<\/td><td>None<\/td><td>Standard<\/td><td>Baseline<\/td><\/tr><tr><td>B<\/td><td>Reference<\/td><td>Production level<\/td><td>None<\/td><td>Standard<\/td><td>Salt effect<\/td><\/tr><tr><td>C<\/td><td>Reference<\/td><td>None<\/td><td>Production level<\/td><td>Standard<\/td><td>Alkali effect<\/td><\/tr><tr><td>D<\/td><td>Plant<\/td><td>Production level<\/td><td>Production level<\/td><td>Production range<\/td><td>Realistic formula<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-0e7bc95e\">Reactive Printing Formulations<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a74106ba\">Reactive printing is a clear example of why CMS must be evaluated inside the complete formulation.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-82798313\">The paste may contain:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reactive dye<\/li>\n\n\n\n<li>Alkali<\/li>\n\n\n\n<li>Salt or ionic auxiliaries<\/li>\n\n\n\n<li>Anti-reducing components<\/li>\n\n\n\n<li>Other process chemicals<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e6e53e56\">All of these can affect viscosity or dye-thickener interaction.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-8c979bb9\">CMS can be evaluated in selected reactive formulations, but it should not be presented as a universal one-to-one sodium alginate replacement.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e3d2f91c\">Final approval should include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Complete paste viscosity<\/li>\n\n\n\n<li>\u0627\u0633\u062a\u062d\u06a9\u0627\u0645 \u0628\u0631\u0642\u0631\u0627\u0631 \u0631\u06a9\u06be\u0646\u0627<\/li>\n\n\n\n<li>Screen running<\/li>\n\n\n\n<li>\u0631\u0646\u06af \u06a9\u06cc \u067e\u06cc\u062f\u0627\u0648\u0627\u0631<\/li>\n\n\n\n<li>Background cleanliness<\/li>\n\n\n\n<li>\u062f\u06be\u0644 \u062c\u0627\u0646\u06d2 \u0648\u0627\u0644\u0627<\/li>\n\n\n\n<li>Fabric hand<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-5bce0a59\">Disperse Printing Formulations<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7326045e\">For polyester disperse printing, salt and pH effects should be considered together with:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disperse dye dispersion<\/li>\n\n\n\n<li>Dispersing agents<\/li>\n\n\n\n<li>Screen rheology<\/li>\n\n\n\n<li>Thermal fixation<\/li>\n\n\n\n<li>Dye release from the thickener film<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ec27bf21\">A CMS grade that retains viscosity after salt addition can still be unsuitable if it runs poorly through the screen or restricts dye release during fixation.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e0d1639d\">Therefore, the final polyester print remains the acceptance standard.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-cce76aba\">Vat, Discharge and Other Specialty Routes<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e149fb57\">Selected vat, discharge, burn-out or specialty printing systems can expose starch-derived thickeners to stronger alkaline, reducing or chemically aggressive conditions.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-24725256\">In these routes, do not extrapolate from a neutral-water CMS viscosity test.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d6d0797f\">Evaluate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Actual alkali\/reducing package<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u067e\u06a9\u0691\u0646\u0627<\/li>\n\n\n\n<li>\u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a<\/li>\n\n\n\n<li>Screen behavior<\/li>\n\n\n\n<li>Pattern development<\/li>\n\n\n\n<li>Post-treatment removal<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6a1e30a7\">FSX Chemical currently separates CMS grades by application route, including disperse, reactive and selected specialty-printing directions, because chemical tolerance requirements differ.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-05264163\">How to Build a Salt-Response Curve<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-2b2603e0\">Step 1: Prepare One CMS Stock Solution<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e3ac65f8\">Use the same batch, concentration, water and hydration method.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-bac542a1\">Step 2: Divide into Equal Samples<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-33e50ac3\">This reduces preparation variability.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0a1ad9d5\">Step 3: Add Several Defined Salt Levels<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-eec39253\">Use the salt relevant to production.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-8cfb66b7\">Step 4: Standardize Mixing and Holding<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d39d1344\">Measure after the same mixing time and equilibration period.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0a8c092c\">Step 5: Measure at the Same Temperature<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f82e07c9\">Do not compare a warm salted sample with a cooler reference.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0caa7427\">Step 6: Record More Than Viscosity<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-eaa89a45\">Also observe clarity, flocs, gel particles, separation and filtration residue.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e217ca74\">The output should be a working curve rather than one pass\/fail number.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-6bb08933\">How to Build an Alkali\/pH Response Curve<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-45989c7b\">Use the same CMS stock and vary the alkaline condition in controlled steps.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-a76c7690\">\u0631\u06cc\u06a9\u0627\u0631\u0688:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Alkali identity<\/li>\n\n\n\n<li>Alkali dosage<\/li>\n\n\n\n<li>Final pH<\/li>\n\n\n\n<li>Conductivity where useful<\/li>\n\n\n\n<li>\u0646\u0645\u0648\u0646\u06d2 \u06a9\u0627 \u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a<\/li>\n\n\n\n<li>Immediate viscosity<\/li>\n\n\n\n<li>Delayed viscosity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e0798fd0\">When possible, include the exact alkali used in production rather than assuming sodium hydroxide, sodium carbonate and sodium bicarbonate behave identically.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-4919f342\">If viscosity changes sharply, repeat around the transition region to establish a practical working window.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-0836f99e\">How to Build a Temperature-Response Curve<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-84598e50\">A meaningful temperature study should use the same CMS sample and the same measurement method.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-0aed5dfc\">Test several temperatures relevant to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Laboratory QC<\/li>\n\n\n\n<li>\u0645\u0644\u0627\u067e<\/li>\n\n\n\n<li>Color kitchen<\/li>\n\n\n\n<li>Machine circulation<\/li>\n\n\n\n<li>Seasonal production<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b74d83bb\">At each point, allow enough time for the sample to reach the target temperature before reading.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-897d7590\">Then return the sample to the standard QC temperature and remeasure.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-82e278f2\">This separates:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b1dc9597\"><strong>Temperature-dependent viscosity<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-60bafead\">from:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-5d33b8f1\"><strong>Heat-induced stability change.<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-4a4255e4\">How to Test the Complete Printing Formula<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-2722722f\">After salt, alkali and temperature curves are understood individually, prepare the real printing paste.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e9cd12d9\">Use:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Actual plant water<\/li>\n\n\n\n<li>Actual dye\/pigment<\/li>\n\n\n\n<li>Production CMS dosage<\/li>\n\n\n\n<li>Actual salt and alkali levels<\/li>\n\n\n\n<li>Normal mixing sequence<\/li>\n\n\n\n<li>Normal working temperature<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-cc26bbcb\">Measure at:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062a\u06cc\u0627\u0631\u06cc \u06a9\u06d2 \u0641\u0648\u0631\u0627\u064b \u0628\u0639\u062f<\/li>\n\n\n\n<li>After the normal holding time<\/li>\n\n\n\n<li>Near the end of the intended working period<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e613fdfe\">Then print under controlled machine conditions and evaluate the finished fabric.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-f9c8dcfa\">This is the stage that determines whether the CMS grade is commercially suitable.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-249b496e\">Troubleshooting Viscosity Changes by Symptom<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Observed Symptom<\/th><th>First Variables to Check<\/th><th>Do Not Assume<\/th><\/tr><\/thead><tbody><tr><td>Viscosity drops immediately after salt<\/td><td>Salt type, dosage, DS, CMS concentration<\/td><td>Every CMS grade will lose the same percentage<\/td><\/tr><tr><td>Viscosity changes after alkali<\/td><td>Final pH, ionic strength, addition order, local concentration<\/td><td>pH is the only variable<\/td><\/tr><tr><td>Warm paste reads lower viscosity<\/td><td>Actual sample temperature<\/td><td>The CMS has permanently degraded<\/td><\/tr><tr><td>Viscosity does not recover after cooling<\/td><td>Heat exposure time, pH, salt, evaporation, stability<\/td><td>Temperature effect was fully reversible<\/td><\/tr><tr><td>Lab formula is stable; plant paste is not<\/td><td>Plant water, production temperature, mixing shear, holding time<\/td><td>The CMS batch is necessarily different<\/td><\/tr><tr><td>Same CMS behaves differently with another dye<\/td><td>Dye dispersion, electrolyte package, pH<\/td><td>Only thickener viscosity matters<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-7068506f\">Production QC and Batch Control<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ed2a8ea5\">A useful CMS production-control record can include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>CMS batch number<\/li>\n\n\n\n<li>CMS concentration<\/li>\n\n\n\n<li>\u067e\u0627\u0646\u06cc \u06a9\u0627 \u0645\u0627\u062e\u0630<\/li>\n\n\n\n<li>Water hardness\/conductivity where relevant<\/li>\n\n\n\n<li>Salt dosage<\/li>\n\n\n\n<li>Alkali identity and dosage<\/li>\n\n\n\n<li>Final pH<\/li>\n\n\n\n<li>Mixing temperature<\/li>\n\n\n\n<li>\u0645\u0627\u067e\u0646\u06d2 \u06a9\u0627 \u062f\u0631\u062c\u06c1 \u062d\u0631\u0627\u0631\u062a<\/li>\n\n\n\n<li>Viscosity method<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u067e\u06a9\u0691\u0646\u0627<\/li>\n\n\n\n<li>Complete paste viscosity<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-47ebe117\">FSX Chemical&#8217;s CMS guidance recommends comparing viscosity only when concentration, temperature, viscometer, spindle, RPM, hydration time and sample preparation are aligned.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b394f290\">This control prevents ordinary process variation from being misclassified as raw-material failure.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-44cde120\">What Information Should You Send to a CMS Supplier?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-c45790ea\">If salt, alkali or temperature is changing your CMS paste, send:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Current CMS product, TDS or sample<\/li>\n\n\n\n<li>CMS concentration<\/li>\n\n\n\n<li>Degree of substitution where known<\/li>\n\n\n\n<li>Viscosity and full test method<\/li>\n\n\n\n<li>Water source and hardness where relevant<\/li>\n\n\n\n<li>Salt identity and dosage<\/li>\n\n\n\n<li>Alkali identity and dosage<\/li>\n\n\n\n<li>Final pH<\/li>\n\n\n\n<li>Mixing temperature<\/li>\n\n\n\n<li>Viscosity measurement temperature<\/li>\n\n\n\n<li>Complete or simplified printing formula<\/li>\n\n\n\n<li>Dye\/pigment system<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u067e\u06a9\u0691\u0646\u0627<\/li>\n\n\n\n<li>Printing route and machine<\/li>\n\n\n\n<li>Current viscosity or printing defect<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d1054ff2\">FSX Chemical can use this information through <a href=\"https:\/\/fsxchemical.com\/ur\/%d8%ae%d9%90%d8%af%d9%85%d9%8e%d8%aa\/%d9%85%d8%b7%d8%a7%d8%a8%d9%82%d8%aa-%d9%be%d8%b0%db%8c%d8%b1-%d9%86%d9%85%d9%88%d9%86%db%92\/\">\u0646\u0645\u0648\u0646\u06d2 \u0627\u0648\u0631 \u0645\u0644\u0627\u067e<\/a> to compare a relevant CMS grade under matched formulation conditions.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-74ce34dc\">How Should Textile Mills Control CMS Viscosity?<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-9025442a\">A practical decision chain is:<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-d6e5c889\"><strong>Define CMS Test Method \u2192 Measure Baseline \u2192 Build Salt Curve \u2192 Build Alkali\/pH Curve \u2192 Build Temperature Curve \u2192 Test Combined Formula \u2192 Print \u2192 Approve Working Window<\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-73f1d806\">The key principles are:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Salt changes CMS viscosity through ionic interactions, but the response is grade-specific.<\/strong><\/li>\n\n\n\n<li><strong>Alkali changes both pH and ionic strength, so these effects should not be confused.<\/strong><\/li>\n\n\n\n<li><strong>Temperature changes the viscosity measured at that moment and may also affect longer-term stability.<\/strong><\/li>\n\n\n\n<li><strong>DS, molecular weight, concentration and water quality change the response.<\/strong><\/li>\n\n\n\n<li><strong>One-factor tests explain the system; the complete production formula approves the product.<\/strong><\/li>\n\n\n\n<li><strong>Same viscosity in water does not mean the same performance after salt, alkali and heat.<\/strong><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-663d9823\">\u0627\u06a9\u062b\u0631 \u067e\u0648\u0686\u06be\u06d2 \u062c\u0627\u0646\u06d2 \u0648\u0627\u0644\u06d2 \u0633\u0648\u0627\u0644\u0627\u062a<\/h2>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-3b15ff12\">1. Does salt reduce CMS printing-paste viscosity?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e499bc8a\">Salt can reduce viscosity in many CMS systems by changing ionic interactions and polymer-chain expansion, but the magnitude depends on CMS structure, concentration, salt type and dosage.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-f9b50a6c\">2. Is CMS resistant to sodium chloride?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-de20cbcc\">Salt tolerance varies by CMS grade. Some published CMS samples are highly sensitive to NaCl, while modified CMS structures can show improved salt tolerance.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-0ddb854b\">3. Does alkali reduce CMS viscosity?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-6eb67816\">It can, but the response is not universal. Alkali changes both pH and ionic strength, and different CMS grades can have different viscosity-pH curves.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-b16b0c65\">4. What is the best pH for CMS?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-bcb3c54a\">There is no universal best pH for all CMS products. Published studies report different maxima depending on CMS structure. Test the actual grade in the production formula.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-6e3a9dcb\">5. Why does CMS viscosity decrease when temperature increases?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-957b60e1\">Higher temperature generally increases molecular mobility and can reduce apparent viscosity. The magnitude depends on CMS structure, concentration and formulation.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-cb8a42b6\">6. Is a viscosity loss at high temperature permanent?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-7de7c8af\">Not necessarily. Cool the sample back to the standard temperature and remeasure. Recovery suggests a mainly reversible thermal effect; poor recovery requires further stability investigation.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-60d16794\">7. Can CMS be stable from 25\u00b0C to 40\u00b0C?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-33011a29\">One published cassava-CMS study reported relative stability in that range, but this is a research-specific result and should not be treated as a universal CMS specification.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-f1d4d917\">8. Why does the same CMS give different viscosity in two factories?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-ed614b86\">Water quality, salt\/alkali dosage, temperature, hydration, mixing, holding time and viscosity test method can all create differences.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-24dda505\">9. Should salt be added before CMS hydration?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-840bdd18\">For many systems, fully hydrating CMS before introducing a high electrolyte load is a useful starting approach, but the actual production sequence should be validated.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-a6cada33\">10. Should CMS viscosity be measured while the sample is still warm?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-dfd59846\">Only if the specification defines that temperature. Supplier comparison should normally condition all samples to the same agreed measurement temperature.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-07f50acd\">11. Can high-DS CMS tolerate salt and alkali better?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-e1311ac3\">DS influences ionic behavior and stability, but higher DS alone does not guarantee universal salt or alkali resistance. Grade structure and formulation still matter.<\/p>\n\n\n\n<h3 class=\"wp-block-wd-title title wd-9bf7d674\">12. What should I send FSX Chemical for CMS viscosity troubleshooting?<\/h3>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-fa70a803\">Send the current CMS TDS\/sample, concentration, viscosity method, water data, salt and alkali levels, final pH, temperature, complete formula, holding time and current printing problem.<\/p>\n\n\n\n<h2 class=\"wp-block-wd-title title wd-f20b2ccc\">Evaluate CMS Viscosity Under Your Real Printing Formula<\/h2>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-efbc0565\">If your CMS shows a large viscosity change after salt, alkali or temperature variation, FSX Chemical can help determine whether the next trial should focus on CMS grade, dosage, mixing sequence or the complete chemical environment.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-400a6572\">For a useful technical comparison, send:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Your current CMS TDS, COA or sample<\/li>\n\n\n\n<li>CMS concentration<\/li>\n\n\n\n<li>Degree of substitution where known<\/li>\n\n\n\n<li>\u0633\u0627\u0646\u0686\u0627\u0642\u06cc \u0627\u0648\u0631 \u0645\u06a9\u0645\u0644 \u0622\u0632\u0645\u0627\u0626\u0634\u06cc \u0637\u0631\u06cc\u0642\u06c1<\/li>\n\n\n\n<li>Plant-water information<\/li>\n\n\n\n<li>Salt type and dosage<\/li>\n\n\n\n<li>Alkali type and dosage<\/li>\n\n\n\n<li>Final pH<\/li>\n\n\n\n<li>Mixing and measurement temperatures<\/li>\n\n\n\n<li>Complete or simplified printing formula<\/li>\n\n\n\n<li>Dye\/pigment system<\/li>\n\n\n\n<li>\u0648\u0642\u062a \u067e\u06a9\u0691\u0646\u0627<\/li>\n\n\n\n<li>Printing route<\/li>\n\n\n\n<li>Current viscosity, screen-running or print-quality target<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-633ed7a9\">\u06a9\u06d2 \u0633\u0627\u062a\u06be \u0634\u0631\u0648\u0639 \u06a9\u0631\u06cc\u06ba <a href=\"https:\/\/fsxchemical.com\/ur\/%d8%ae%d9%90%d8%af%d9%85%d9%8e%d8%aa\/%d9%85%d8%b7%d8%a7%d8%a8%d9%82%d8%aa-%d9%be%d8%b0%db%8c%d8%b1-%d9%86%d9%85%d9%88%d9%86%db%92\/\">\u0646\u0645\u0648\u0646\u06d2 \u0627\u0648\u0631 \u0645\u0644\u0627\u067e<\/a> to establish controlled salt, alkali and temperature comparisons.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-674e3718\">\u0646\u0638\u0631\u062b\u0627\u0646\u06cc <a href=\"https:\/\/fsxchemical.com\/ur\/product\/carboxymethyl-starch-cms\/\">FSX Chemical Carboxymethyl Starch (CMS)<\/a> for current printing-grade options.<\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-b25d6e11\">You can also <a href=\"https:\/\/fsxchemical.com\/ur\/%d8%ae%d9%90%d8%af%d9%85%d9%8e%d8%aa\/request-a-quote\/\">\u0641\u06cc\u06a9\u0679\u0631\u06cc \u0633\u06d2 \u0628\u0631\u0627\u06c1\u0650 \u0631\u0627\u0633\u062a \u0642\u06cc\u0645\u062a \u0645\u0639\u0644\u0648\u0645 \u06a9\u0631\u06cc\u06ba<\/a> after the suitable CMS route is confirmed or <a href=\"https:\/\/fsxchemical.com\/ur\/contact-us\/\">FSX \u06a9\u06cc\u0645\u06cc\u06a9\u0644 \u0633\u06d2 \u0631\u0627\u0628\u0637\u06c1 \u06a9\u0631\u06cc\u06ba<\/a> for technical discussion\ud83d\udce7\u00a0<strong>\u0627\u06cc \u0645\u06cc\u0644<a href=\"https:\/\/fsxchemical.com\/ur\/contact-us\/\">: Service@fsxchemical.com<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-wd-paragraph wd-08bd1967\"><strong>CMS viscosity is not a fixed number once the product enters a textile printing formula. Salt, alkali and temperature reshape the polymer environment, so the useful specification is the viscosity and rheology that remain inside the validated production window.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Salt, alkali and temperature can all change CMS printing-paste viscosity, but through different mechanisms. Salt changes ionic strength, alkali changes both pH and ionic environment, and temperature changes molecular mobility and measured viscosity. The actual response depends on CMS grade, DS, concentration, water quality and holding time.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"How Salt, Alkali and Temperature Affect CMS Printing Paste Viscosity","_seopress_titles_desc":"Learn how salt, alkali, pH and temperature affect CMS printing paste viscosity, hydration, rheology and stability in textile printing formulations.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[1489,1208,1207,1263,1340,1478,1114],"class_list":["post-10977","post","type-post","status-publish","format-standard","hentry","category-technical-guides","tag-alkali-stability","tag-carboxymethyl-starch","tag-cms","tag-paste-rheology","tag-printing-paste-viscosity","tag-salt-tolerance","tag-textile-printing"],"acf":[],"_links":{"self":[{"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/posts\/10977","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/comments?post=10977"}],"version-history":[{"count":2,"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/posts\/10977\/revisions"}],"predecessor-version":[{"id":10980,"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/posts\/10977\/revisions\/10980"}],"wp:attachment":[{"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/media?parent=10977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/categories?post=10977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fsxchemical.com\/ur\/wp-json\/wp\/v2\/tags?post=10977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}