Influence of compositional gradient on the phase behavior of ternary symmetric homopolymer-copolymer blends: A Monte Carlo study

doi:10.1016/j.polymer.2011.10.039

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	Influence of compositional gradient on the phase behavior of ternary symmetric homopolymer-copolymer blends: A Monte Carlo study
	Sun, Dachuan; Guo, Hongxia
刊名	POLYMER
	2011-11-28
卷号	52 期号:25 页码:5922-5932
关键词	Gradient Copolymers Phase Behavior Monte Carlo Simulation
ISSN号	0032-3861
DOI	10.1016/j.polymer.2011.10.039
英文摘要	The formation of bicontinuous microemulsions (BUEs) in ternary symmetric blends including two immiscible homopolymers A and B as well as a linear gradient copolymer G is verified by Monte Carlo simulations. Four phase diagrams as a function of segregation strength and blend composition are constructed to show the effects of compositional gradient. Compared with the blends of A/B/diblock copolymers, the BUE phase occupies a broader region in the phase diagram of the A/B/G blends and is replaced by the three-phase coexistence phases of A + B + L or A + B + D at a much lower chain length ratio. Moreover, the lamellar phase is formed at a higher value of segregation strength, has a shorter periodic length and lower orientational order, and spans a narrower range of the phase diagram. A "counteraction effect" is proposed to explain those discrepancies caused by gradient copolymers. (C) 2011 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000297539000029
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/44249]
专题	中国科学院化学研究所
通讯作者	Guo, Hongxia
作者单位	Chinese Acad Sci, Beijing Natl Lab Mol Sci, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem,Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sun, Dachuan,Guo, Hongxia. Influence of compositional gradient on the phase behavior of ternary symmetric homopolymer-copolymer blends: A Monte Carlo study[J]. POLYMER,2011,52(25):5922-5932.
APA	Sun, Dachuan,&Guo, Hongxia.(2011).Influence of compositional gradient on the phase behavior of ternary symmetric homopolymer-copolymer blends: A Monte Carlo study.POLYMER,52(25),5922-5932.
MLA	Sun, Dachuan,et al."Influence of compositional gradient on the phase behavior of ternary symmetric homopolymer-copolymer blends: A Monte Carlo study".POLYMER 52.25(2011):5922-5932.