Poly(divinylbenzene-alt-maleic anhydride) microgels:: Intermediates to microspheres and macrogels in cross-linking copolymerization

被引：58

作者：

Frank, RS

Downey, JS

Yu, K

Stöver, HDH ^{[1
]}

机构：

[1] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada

[2] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4M1, Canada

来源：

MACROMOLECULES | 2002年 / 35卷 / 07期

关键词：

D O I：

10.1021/ma001927m

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Three distinct copolymer morphologies were observed during the cross-linking copolymerization of divinylbenzene-55 and maleic anhydride at low monomer concentrations in methyl ethyl ketone/heptane mixtures: microspheres, microgels, and macrogels. These morphologies depended primarily upon solvent composition and changed from microspheres and microgels to macrogels with increasing methyl ethyl ketone volume fractions. The effects of solvent composition and cross-linker concentration on the observed morphologies were investigated using electron microscopy, viscosity, and light scattering experiments. Microgels were found to be precursors to both macrogels and microspheres, and mechanisms for the formation of each morphology are proposed.

引用

页码：2728 / 2735

页数：8

共 27 条

[1] MICROGELS - POLYMERS WITH A SPECIAL MOLECULAR ARCHITECTURE [J].