An Experimental Study on the Free-Radical Copolymerization Kinetics with Crosslinking of Styrene and Divinylbenzene in Supercritical Carbon Dioxide

被引：11

作者：

Garcia-Moran, Pedro R. ^{[1
]}

Jaramillo-Soto, Gabriel ^{[1
]}

Albores-Velasco, Martha E. ^{[2
]}

Vivaldo-Lima, Eduardo ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Dept Ingn Quim, Fac Quim, Mexico City 04510, DF, Mexico

[2] Univ Nacl Autonoma Mexico, Dept Quim Organ, Fac Quim, Mexico City 04510, DF, Mexico

来源：

MACROMOLECULAR REACTION ENGINEERING | 2009年 / 3卷 / 01期

关键词：

copolymerization; crosslinking; dispersion polymerization; poly(styrene-co-divinylbenzene); supercritical carbon dioxide; BLOCK-COPOLYMERS; GEL STATE; POLYMERIZATION; POLYDIMETHYLSILOXANE; SORPTION; RESINS; MODEL;

D O I：

10.1002/mren.200800031

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A study on the effect of process conditions and composition of the reacting mixture on the kinetics and particle properties in the copolymerization of styrene and divinylbenzene in supercritical carbon dioxide is presented. Polystyrene-block-polydimethylsiloxane and Krytox 257 FSL (Dupont) were used as stabilizers, and their performance compared. A 38 mL, high-pressure view cell, equipped with one frontal and two lateral sapphire windows, was used as the reacting vessel. The polymer product was characterized for total monomer conversion, gel content, molecular weight averages of the sol fraction and particle size distribution. Acceptable polymerization rates and partially-agglomerated spherical particles were produced under the conditions tested.

引用

页码：58 / 70

页数：13

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