KINETICS OF GRAFTING ACRYLONITRILE ONTO STARCH

被引：14

作者：

GUGLIEMELLI, LA ^{[1
]}

SWANSON, CL ^{[1
]}

DOANE, WM ^{[1
]}

机构：

[1] USDA, ARS, NO REG RES LAB, PEORIA, IL 61604 USA

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1973年 / 11卷 / 10期

关键词：

CHEMICAL REACTIONS - Reaction Kinetics - STARCH;

D O I：

10.1002/pol.1973.170111004

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Acrylonitrile (AN) was graft copolymerized onto gelatinized and granular wheat starch in aqueous media in the presence of ceric ammonium nitrate initiator at 91-364 anhydroglucose units (AGU) per cerium(IV) and at 1. 08-4. 33 AN to AGU ratios. Molecular weights and dispersities of polyacrylonitrile side chains were determined by gel-permeation chromatography. Conversion-time plots of AN polymerizations in both gelatinized and granular starch systems show characteristics common to heterogeneous polymerizations that could be explained on the basis of buried polymer radicals. Graft copolymerization of AN onto starch, at least during initial stages, is not suitably explained by a kinetic scheme involving termination by polymer radical with cerium(IV) ion.

引用

页码：2451 / 2462

页数：12

共 15 条

[1] KINETICS OF VINYL POLYMERIZATION INITIATED BY CERIC ION IN AQUEOUS SOLUTION [J].