SHEAR OF DIBLOCK COPOLYMER LAMELLAE - WIDTH CHANGES AND UNDULATIONAL INSTABILITIES

被引：33

作者：

WILLIAMS, DRM ^{[1
]}

MACKINTOSH, FC ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV,RES SCH PHYS SCI & ENGN,INST ADV STUDIES,CANBERRA,ACT 2601,AUSTRALIA

来源：

MACROMOLECULES | 1994年 / 27卷 / 26期

关键词：

D O I：

10.1021/ma00104a024

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We investigate the effect of oscillatory shear on the lamellar spacing in melts of symmetric diblock copolymers in the strong segregation limit. We find that the equilibrium lamellar spacing decreases. The modulus due to entanglements plays an important role. We further argue that before equilibrium is reached the layers will show an undulational instability in the direction perpendicular to the velocity and the velocity gradient.

引用

页码：7677 / 7680

页数：4

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