A novel strategy for controlling the orientation of cylindrical domains in thin blend copolymer films via 'double phase separation'

被引：9

作者：

Neratova, Irina V. ^{[1
,2
]}

Khalatur, Pavel G. ^{[1
,3
]}

Khokhlov, Alexei R. ^{[1
,3
]}

机构：

[1] Univ Ulm, Dept Polymer Sci, D-89081 Ulm, Germany

[2] Tver State Univ, Dept Phys Chem, Tver 170002, Russia

[3] Russian Acad Sci, Inst Organoelement Cpds, Moscow 119991, Russia

来源：

CHEMICAL PHYSICS LETTERS | 2010年 / 487卷 / 4-6期

关键词：

FORMING BLOCK-COPOLYMERS; MICROPHASE SEPARATION; SIMULATIONS; TRANSITION; DYNAMICS; SURFACES;

D O I：

10.1016/j.cplett.2010.01.053

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We discuss a simple and robust approach to control the orientation of cylindrical microdomains in block copolymer films. The approach is based on the so-called double phase separation occurring in the binary blend of incompatible compositionally asymmetric block copolymers and their selective adsorption on a homogeneous surface. As a proof-of-concept, we perform mesoscale simulations,using dynamic density functional theory and dissipative particle dynamics, and show that the target morphology with perpendicularly oriented cylinders can be thermodynamically stable for rather thick films when the intrinsic hexagonal period of the majority bulk phase is commensurate with the surface-induced pattern formed by the strongly adsorbed minority component. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：297 / 302

页数：6

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