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- W2377399524 abstract "The low degree of substitution carboxyl methyl amphoteric starch was synthesized by wet reaction process with cassava starch,3-chloro-2-hydroxypropyltrimethylammonium chloride(CHPTMA)and sodium chloroacetate as material,50% ethanol aqueous solution as medium,and NaOH as catalyst.By single factor experiment,experiment studied on the effect on the dosage of NaOH、CHPTMA、sodium chloroacetate 、temperature and time to reaction.The optimum conditions were followings:The mole ratio of sodium hydroxide to sodium chloroacetate and CHPTMA was 2.22,temperature was 40℃,time was 4 hours,the dosage of sodium chloroacetate was 2.5%,and the dosage of CHPTMA was 3.5%.The sample′s cationic degree of substitution was 0.028,anionic degree of substitution was 0.011.The samples had distinct effect on strengthening in papermaking experiment." @default.
- W2377399524 created "2016-06-24" @default.
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- W2377399524 date "2007-01-01" @default.
- W2377399524 modified "2023-09-24" @default.
- W2377399524 title "Synthesis of carboxylic methyl amphoteric starch and application in papermaking" @default.
- W2377399524 hasPublicationYear "2007" @default.
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