THERMODYNAMIC AND CONFORMATIONAL PROPERTIES OF STYRENE-METHYL METHACRYLATE BLOCK COPOLYMERS IN DILUTE SOLUTION .I. PREPARATION AND CHARACTERIZATION

被引：35

作者：

OHNUMA, H

KOTAKA, T

INAGAKI, H

机构：

[1] Institute for Chemical Research, Kyoto University, Uji-shi, 611, Kyoto-fu

来源：

POLYMER | 1969年 / 10卷 / 07期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/0032-3861(69)90064-0

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An anionic polymerization procedure for preparing styrene and methyl methacrylate block copolymers is described. The products were characterized by combustion analysis, osmometry, light scattering measurement, and gel permeation chromatography. The analyses showed that the block copolymers consisted of linear three-block chains except for a few cases. The correlation between the heterogeneities of molecular weights and of composition as described by light scattering apparent molecular weights in different solvents is discussed. The heterogeneities can be described by two parameters for the polydispersities of precursor polystyrene and poly(methyl methacrylate) subchains and by the average composition of the block copolymer. Preliminary data on the light scattering conformational analyses are given. The results suggest that the block copolymer chains would assume the conformations similar to any flexible linear homopolymers at least in the solvents, toluene and butanone, examined in this study. © 1969.

引用

页码：501 / +

页数：1

共 40 条

[1]

Battaerd HAJ, 1967, GRAFT COPOLYMERS

[2] REPARTITION ANGULAIRE DE LA LUMIERE DIFFUSEE PAR UNE SOLUTION DE COPOLYMERES [J].