ORIENTATION ON MICRODOMAINS OF DIBLOCK COPOLYMERS

被引:30
作者
ISHIZU, K
YAMADA, Y
FUKUTOMI, T
机构
[1] Department of Polymer Science, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152
关键词
diblock copolymer; lamellar structure; surface and bulk morphologies; transmission electron microscopy; X-ray photoelectron microscopy;
D O I
10.1016/0032-3861(90)90074-9
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Well defined poly(styrene-block-isoprene) and poly(styrene-block-2-vinylpyridine) diblock copolymers were prepared by sequential anionic addition. Films were fabricated by casting these diblock copolymer solutions on a Teflon sheet by varying the casting conditions. Morphological results of these ultrathin sections were obtained on a transmission electron microscope. The surface characterization of poly(styrene-block-2-vinylpyridine) film was carried out by X-ray photoelectron microscopy. Both surface and bulk morphologies of these diblock copolymer films (about 50 wt% polystyrene blocks) showed an interesting tendency, namely that alternating lamellar structures of two microphases were oriented with their interface parallel to the surface that contacts air. © 1990.
引用
收藏
页码:2047 / 2052
页数:6
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