LAMELLAR MICROPHASE-SEPARATED STRUCTURE OF ABA TRIBLOCK COPOLYMERS

被引：3
|
作者：
MATSUSHITA, Y [1 ]
NOMURA, M [1 ]
NODA, I [1 ]
IMAI, M [1 ]
机构：
[1] NAGOYA UNIV,DEPT APPL CHEM,CHIKUSA KU,NAGOYA,AICHI 46401,JAPAN
来源：
PHYSICA B | 1995年 / 213卷
关键词：
D O I：
10.1016/0921-4526(95)00253-6
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Alternating lamellar structures of 2-vinylpyridine-styrene-2-vinylpyridine triblock copolymers of the ABA type with two different compositions were studied by small-angle neutron scattering (SANS). The volume fractions of polystyrene (S), phi(s), of the copolymers are 0.32 and 0.5. It was revealed that the middle block polymers (S) shrink in the direction parallel to the lamellar interface, but they are elongated normal to the interface, so that the volume occupied by the middle block polymers are the same as that in the unperturbed state irrespective of phi(s). However, the degree of deformation for the sample with phi(s) of 0.32 is higher than that for the sample with phi(s) of 0.5.
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页码：697 / 699
页数：3
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