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.
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页码：5408 / 5411
页数：4
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