Identification of an intermediate-segregation regime in a diblock copolymer system

被引：44

作者：

Papadakis, CM ^{[1
]}

Almdal, K ^{[1
]}

Mortensen, K ^{[1
]}

Posselt, D ^{[1
]}

机构：

[1] RISO NATL LAB,DEPT SOLID STATE PHYS,DK-4000 ROSKILDE,DENMARK

来源：

EUROPHYSICS LETTERS | 1996年 / 36卷 / 04期

关键词：

D O I：

10.1209/epl/i1996-00224-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the scaling behavior of the bulk structure in a symmetric diblock copolymer system using small-angle scattering. We have identified a crossover between the intermediate-segregation regime and the strong-segregation limit at chi N similar or equal to 29. In the intermediate-segregation regime (chi N similar or equal to 5-29), the characteristic length scale, D, scales with chain length, N, as D proportional to N-0.83. In the strong-segregation limit (chi N > 29), the scaling behavior D proportional to N-0.61 is found. The observed crossover is consistent with theoretical predictions.

引用

页码：289 / 294

页数：6

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