Acrylonitrile polymerization initiated by Ce(IV)-cyclohexanone redox system in presence of surfactant

被引：3

作者：

Patra, M ^{[1
]}

Behera, AK ^{[1
]}

Behera, RK ^{[1
]}

机构：

[1] Sambalpur Univ, PG Dept Chem, Burla 768019, Orissa, India

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2003年 / 90卷 / 08期

关键词：

surfactants; micelles; kinetics (polym.);

D O I：

10.1002/app.12810

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The rate of polymerization of acrylonitrile, using the Ce(IV)-cyclohexanone redox system as an initiator, was studied kinetically, in the presence of 0.015M sodium dodecyl sulfate (SDS), over a temperature range of 25-45degreesC. The rate of polymerization (R-p), percentage of monomer conversion, and rate of Ce(IV) consumption (-R-Ce) were found to increase with the concentration of SDS, above its CMC. The effect of [AN], [Ce(IV)], [H+], and the ionic strength were also studied. The overall activation energies for the polymerization processes were computed to be 23.14 and 17.64 kcal/mol in the absence and presence of 0.015M SDS. A suitable kinetic mechanistic scheme for the free-radical mechanism was proposed. (C) 2003 Wiley Periodicals, Inc.

引用

页码：2066 / 2072

页数：7