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Starch Modification by Graft Copolymerization of Acrylonitrile(PDF)

Transactions of Tianjin University[ISSN:1006-4982/CN:12-1248/T]

Issue:
2003年03期
Page:
231-234
Publishing date:

Info

Title:
Starch Modification by Graft Copolymerization of Acrylonitrile
Author(s):
LIU Rui-xian1 LI Li1 RU Zong-ling2 ZHANG Li-ming1 GAO Jian-ping1 TIAN Ru-chuan1
(1. School of Sciences, Tianjin University, Tianjin 300072, China; 2. Department of Chemical Engineering, Anyang University, Anyang 455000, China)
Keywords:
DOI:

Abstract:
The graft copolymerization of acrylonitrile (AN) onto starch under the initiation of potassium permanganate was investigated. The effect of various reaction conditions on the graft copolymerization was studied. The relationships between the grafting rate and the initiator concentration of potassium permanganate, monomer acrylonitrile and backbone starch, as well as reaction temperature were established. The oxidation reaction of starch with manganic ions and valence changes of manganic ions during the graft copolymerization were discussed. The results show that manganic ion Mn 7+ underwent a series of valence changes during the graft copolymerization: Mn(Ⅶ) → Mn(Ⅳ) → Mn(Ⅲ) → Mn(Ⅱ). The grafting rate of the graft copolymerization of acrylonitrile onto starch is also given.

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Last Update: 2011-05-02