Three-dimensional observations of grain boundary morphologies in a cylinder-forming block copolymer

被引：28

作者：

Jinnai, Hiroshi ^{[1
]}

Yasuda, Kaoru

Nishi, Toshio

机构：

[1] Kyoto Inst Technol, Dept Macromol Sci & Engn, Kyoto 6068585, Japan

[2] Tokyo Inst Technol, Dept Organ & Polymer Mat, Sch Sci & Engn, Meguro Ku, Tokyo 1528552, Japan

来源：

MACROMOLECULAR SYMPOSIA | 2006年 / 245卷

关键词：

block copolymers; cylindrical structure; microphase-separated structure; three-dimensional reconstruction; transmission electron microtomography;

D O I：

10.1002/masy.200651324

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 grain boundary morphology of a cylinder-forming poly(styreneblockisoprene) (SI) diblock copolymer was investigated using transmission electron microtomography (TEMT). The three-dimensional (3D) morphologies of the grain boundaries between the two grains with different orientation angle, alpha, were investigated. in the present study, two kinds of grain boundary morphologies, alpha similar or equal to 90 degrees and alpha similar or equal to 120 degrees, were examined in 3D. it was found that, in the case of alpha similar or equal to 90 degrees, most of the cylindrical domains bent at the grain boundary in order not to intersect each other, while the cylindrical domains were found to be smoothly connected and were continuous in the case of alpha similar or equal to 120 degrees. The observed morphologies indicated that the chain conformation inside the cylindrical microdomains plays more significant role than the segmental interaction between the two blocks.

引用

页码：170 / 174

页数：5

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