Preparation and Application of Carboxymethyl Starch

Abstract:

Carboxymethyl starch (CMS) was used as printing thickener, it was synthesized by carboxymethylation reaction with acid-hydrolyzed maize starch and chloroacetic acid(MCA). The optimum conditions of synthesized CMS were as follows: the ratio of nNaOH/nAGU was 3, the ratio of nMCA/nAGU was 1.5:1, etherification temperature was 65°C. The highest degree of substitution(DS) was 0.45. The maximum value of printing viscosity index(PVI) was 0.513, the best water-retention property was 0.2cm and the solid containing rate was 8%. Compared the synthesized CMS with sodium alginate, the results on printing experiments showed the properties of the CMS were almost the same as sodium alginate. Form FT-IR, it was found carboxyl functional group were show at absorption peak of 1604cm-1,1425cm-1 and 1325cm-1, it indicated that the maize starch were substituted.

• Periodical: Applied Mechanics and Materials (Volumes 268-270)
• Pages: 594-600
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.268-270.594
• Online since: December 2012
• Authors: Xiao Hua Huang, Lin Li, Jin Yu Wang, Guang Zhi Zhang, Xu Chen Tao
• Keywords: Acid-Hydrolyzed Maize Starch, Chloroacetic Acid, Degree of Substitution, Printed Fabric Properties

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