PREPARATION AND MORPHOLOGY OF TRIBLOCK COPOLYMERS OF THE ABC TYPE

被引：240

作者：

MOGI, Y ^{[1
]}

KOTSUJI, H ^{[1
]}

KANEKO, Y ^{[1
]}

MORI, K ^{[1
]}

MATSUSHITA, Y ^{[1
]}

NODA, I ^{[1
]}

机构：

[1] NAGOYA UNIV,DEPT APPL CHEM,CHIKUSA KU,NAGOYA 46401,JAPAN

来源：

MACROMOLECULES | 1992年 / 25卷 / 20期

关键词：

D O I：

10.1021/ma00046a043

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 variation of morphology of triblock copolymers of the ABC type, poly(isoprene-b-styrene-b-2-vinylpyridine), with composition was studied by transmission electron microscopy. Four types of morphology were observed for the microphase-separated structures of the samples whose volume fractions of the middle-block polymer, polystyrene, range from 0.3 to 0.8, while keeping the volume fractions of the end-block polymers, i.e., polyisoprene and poly(2-vinylpyridine), equal. They are a three-phase four-layer lamellar structure, an ordered tricontinuous double-diamond structure, a cylindrical structure composed of two kinds of cylindrical domains formed by two end-block polymers in a polystyrene matrix, and a spherical structure composed of two kinds of spherical domains formed by two end-block polymers in a polystyrene matrix. The variation of morphology with composition is discussed in comparison with that of diblock copolymers.

引用

页码：5408 / 5411

页数：4

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