Dispersion polymerization of styrene in supercritical carbon dioxide: Importance of effective surfactants

被引：191

作者：

Canelas, DA ^{[1
]}

Betts, DE ^{[1
]}

DeSimone, JM ^{[1
]}

机构：

[1] UNIV N CAROLINA,DEPT CHEM,VENABLE & KENAN LABS,CHAPEL HILL,NC 27599

来源：

MACROMOLECULES | 1996年 / 29卷 / 08期

关键词：

D O I：

10.1021/ma951642n

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 dispersion polymerization of styrene in supercritical CO2 using amphiphilic diblock copolymers to impart steric stabilization was investigated. Lipophilic, CO2-insoluble materials can be effectively emulsified in carbon dioxide using amphiphilic diblock copolymer surfactants. The resulting high yield (>90%) of polystyrene is obtained in the form of a stable polymer colloid comprised of submicron-sized particles. The particle diameter and distribution of sizes were shown to be dependent on the nature of the stabilizing block copolymer.

引用

页码：2818 / 2821

页数：4

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