Structure formation in two-dimensionally confined diblock copolymer films

被引：30
作者：
Müller-Buschbaum, P
Wolkenhauer, M
Wunnicke, O
Stamm, M
Cubitt, R
Petry, W
机构：
[1] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany
[2] Max Planck Inst Polymer Res, D-55128 Mainz, Germany
[3] Inst Polymerforsch Dresden EV, D-01069 Dresden, Germany
[4] ILL Grenoble, F-38042 Grenoble, France
来源：
LANGMUIR | 2001年 / 17卷 / 18期
关键词：
D O I：
10.1021/la010448t
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The surface topography and the chemical morphology of poly(styrene-block-paramethylstyrene) diblock copolymers confined within isolated drops are investigated. The drop geometry imposes a two-dimensional spatial restriction. With scanning force microscopy, the film thickness dependence of the mean drop distance as the basic topographical feature is determined. In addition to large drops, a second smaller droplet structure is observed among the drops. The comparison of grazing incidence small-angle scattering using X-rays and neutrons shows that inside the drops the diblock copolymer orients into perpendicular lamellae with respect to the substrate surface. Compared to the bulk, the lamellar spacing is stretched parallel to the substrate.
引用
收藏
页码：5567 / 5575
页数：9
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