Paper Title:
Synthesis of Carboxymethyl Starch with High Degree of Substitution by a Modified Dry Process
  Abstract

Granular carboxymethyl starch (CMS) with high degree of substitution (DS) was synthesized using a modified dry process. The carboxymethylation reaction was carried out with granular potato starch, solid NaOH and sodium monochloroacetate (SMCA). The effects of reaction temperature, reaction time, molar ratio of NaOH and SMCA to starch on the degree of substitution (DS) and the reaction efficiency (RE) of CMS were investigated. High DS up to 0.78 was obtained for reaction at 323 K for 6 h with molar ratio of NaOH and SMCA to starch being 2:2:1. CMS was characterized by Fourier transform infrared spectrophotometer and scanning electron microscopy.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
306-310
DOI
10.4028/www.scientific.net/AMR.233-235.306
Citation
S. F. Li, J. M. V. Mujyambere, M. Liu, "Synthesis of Carboxymethyl Starch with High Degree of Substitution by a Modified Dry Process", Advanced Materials Research, Vols. 233-235, pp. 306-310, 2011
Online since
May 2011
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Price
$32.00
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