CROSS-LINKING OF THE INNER POLY(METHYL METHACRYLATE) CORE OF POLY(ALPHA-METHYLSTYRENE-B-METHYL METHACRYLATE) MICELLES IN SELECTIVE SOLVENT .1. EFFECT OF SOLVENT SELECTIVITY

被引：40

作者：

SAITO, R

ISHIZU, K

FUKUTOMI, T

机构：

[1] Tokyo Institute of Technology, Department of Polymer Science, 152, 2-12, Ookayama, Meguro-ku, Tokyo, Japan

来源：

POLYMER | 1990年 / 31卷 / 04期

关键词：

block copolymer; core-corona type microgel; crosslinking reaction; polymer micelle; selective solvent;

D O I：

10.1016/0032-3861(90)90289-B

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 crosslinking reaction of poly(methyl methacrylate) cores in poly(α-methylstyrene-b-methyl methacrylate) micelles was carried out in mixed solvents of benzene and cyclohexane. In suitable solvent core-corona type particles were obtained for block copolymers with sufficiently high molecular weight and α-methylstyrene content > 39%. The particle size became a minimum at a benzene/cyclohexane ratio of 3 7- 4 6 (v/v) which depended on the nature of the block copolymers. The particle size increased drastically when the solvent compositions deviated from this region. When the molecular weight of the block copolymer was < 2 × 104, inter-micelle crosslinking took place under the experimental conditions of this study, even when the α-methylstyrene content was very high. © 1990.

引用

页码：679 / 684

页数：6

共 14 条

[1] FORMATION OF WORM-LIKE MICELLES FROM A POLYSTYRENE-POLYBUTADIENE-POLYSTYRENE BLOCK CO-POLYMER IN ETHYL-ACETATE [J].