SYNTHESIS OF HETEROARM STAR COPOLYMERS BY ANIONIC COPOLYMERIZATION OF BINARY MACROMONOMERS

被引：25

作者：

ISHIZU, K

KUWAHARA, K

机构：

[1] Department of Polymer Science, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152

来源：

POLYMER | 1994年 / 35卷 / 22期

关键词：

MACROMONOMER; STAR COPOLYMER; MICROPHASE SEPARATION;

D O I：

10.1016/0032-3861(94)90751-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Vinylbenzyl-terminated polystyrene (PS) and polyisoprene (PI) macromonomers were synthesized by the coupling reaction of corresponding living anions with p-chloromethylstyrene. Anionic copolymerizations of binary PS and PI macromonomers were carried out in benzene with n-butyllithium as an initiator. The reactivity ratios of these systems were close to an azeotropic copolymerization. We studied the microphase separation of A(n)B(n) star-like (comb-shaped) copolymers by electron microscopy. A(n)B(n) star copolymers formed clear microphase-separated structures and their domain sizes were smaller than those of corresponding diblock copolymers.

引用

页码：4907 / 4913

页数：7

共 26 条

[1] NEUTRON REFLECTIVITY STUDIES OF THE SURFACE-INDUCED ORDERING OF DIBLOCK COPOLYMER FILMS [J].