Synthesis and flocculation behavior of cationic konjac glucomannan containing quaternary ammonium substituents

A quaternary ammonium derivative of konjac glucomannan (KGM) was prepared by a dry process from KGM and 2,3-epoxypropyl trimethylammonium chloride. We determined the optimization of the experimental conditions by studying on the effects of the water amount, alkaline catalyst amount, reaction tempera...

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Bibliographic Details
Published in:Journal of applied polymer science 2010-02, Vol.115 (4), p.2368-2374
Main Authors: Tian, Dating, Wu, Xiong, Liu, Chengmei, Xie, Hong-Quan
Format: Article
Language:English
Subjects:
Applied sciences
biopolymers
Cationic
Chlorides
Derivatives
Drying
Exact sciences and technology
Flocculating
functionalization of polymers
Natural polymers
Optimization
Physicochemistry of polymers
polysaccharides
Reproduction
Settling
Starch and polysaccharides
Synthesis
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Summary:A quaternary ammonium derivative of konjac glucomannan (KGM) was prepared by a dry process from KGM and 2,3-epoxypropyl trimethylammonium chloride. We determined the optimization of the experimental conditions by studying on the effects of the water amount, alkaline catalyst amount, reaction temperature, and reaction time on the degree of substitution. In addition, the flocculation characteristics of the cationic derivative of KGM were evaluated in a 1.0% kaolin suspension with spectrophotometry via investigation of the influence of the flocculant amount, pH, salt concentration, temperature, and settling time on the flocculation. The results show that the synthesized cationic KGM could potentially be used as a high-performance flocculating agent.
ISSN:0021-8995
1097-4628
1097-4628
DOI:10.1002/app.31170