Self-assembly of ABA triblock copolymers under soft confinement

被引：21
作者：
Sheng, Yuping [1 ]
An, Jian [1 ]
Zhu, Yutian [2 ]
机构：
[1] Jilin Univ, Coll Mat Sci & Engn, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
来源：
CHEMICAL PHYSICS | 2015年 / 452卷
基金：
中国国家自然科学基金;
关键词：
Self-assembly; Soft confinement; Monte Carlo simulation; MONTE-CARLO-SIMULATION; C-SELECTIVE SOLVENTS; DIBLOCK COPOLYMER; BLOCK-COPOLYMERS; SEPARATION STRUCTURES; DRUG-DELIVERY; PHASE-DIAGRAM; THIN-FILMS; NANOPARTICLES; VESICLES;
D O I：
10.1016/j.chemphys.2015.02.019
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：
Using Monte Carlo method, the self-assembly of ABA triblock copolymers under soft confinement is investigated in this study. The soft confinement is achieved by a poor solvent environment for the polymer, which makes the polymer aggregate into a droplet. Various effects, including the block length ratio, the solvent quality for the blocks B, and the incompatibility between blocks A and B, on the micellar structures induced by soft confinement are examined. By increasing the solvent quality of B blocks, the micellar structure transforms from stacked lamella to bud-like structure, and then to onion-like structure for A(5)B(8)A(5) triblock copolymers, while the inner micellar structure changes from spherical phase to various cylindrical phase, such as inner single helix, double helixes, stacked rings and cage-like structures, for A(7)B(4)A(7) triblock copolymers. Moreover, the formation pathways of some typical aggregates are examined to illustrate their growth mechanisms. (C) 2015 Elsevier B.V. All rights reserved.
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收藏
页码：46 / 52
页数：7
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