Order-Order Transition of C → sdG → sL → S in ABC Triblock Copolymer Thin Film Induced by Solvent Vapor

被引：12
|
作者：
Luo, Chunxia [1 ,2 ]
Huang, Weihuan [1 ,2 ]
Han, Yanchun [1 ,2 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2009年 / 30卷 / 07期
基金：
中国国家自然科学基金;
关键词：
order-order transition; thin film; triblock copolymer; BLOCK-COPOLYMERS; DIBLOCK COPOLYMERS; MORPHOLOGICAL TRANSITIONS; EPITAXIAL TRANSITIONS; PHASE-BEHAVIOR; MELTS; TRANSFORMATIONS; STABILITY; CYLINDER;
D O I：
10.1002/marc.200800675
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The morphology transition of polystyrene-block-poly(butadiene)-block-poly(2-vinylpyridine) (SBV) triblock thin film induced in benzene vapor showing weak selectivity for PS is investigated. The order-order transitions (OOT) in the sequence of core-shell cylinders (C), sphere in 'diblock gyroid' (sdG), sphere in lamella (sL) and sphere (S) are observed. The projection along (111) direction in Gyroid phase (sdG(111)) is found to epitaxially grow from C(001) in the film. Instead of sdG(111), sdG(110)(0.1875) develops to the phase of sL. Consequently, the film experiences the transition sequence of sdG(111) -> sdG(211) -> sdG(110)(0.25) -> sdG(110)(0.1875) between C and sL. The mechanism is analyzed from the total surface area of the blocks.
引用
收藏
页码：515 / 520
页数：6
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