ICCAS OpenIR
Transition between crystallization and microphase separation in PS-b-PEO thin film Influenced by solvent vapor selectivity
Yang, Ping; Yu, Xinhong; Han, Yanchun
2010-10-01
Source PublicationPOLYMER
ISSN0032-3861
Volume51Issue:21Pages:4948-4957
AbstractIn this paper, the effect of solvent selectivity on the transition between crystallization and microphase separation of the semicrystalline diblock copolymer polystyrene-b-poly(ethylene oxide) (PS-b-PEO) thin films was investigated. Square-shaped crystals formed due to lower barrier of crystalline nucleation in both poor and good solvent vapor for PEO. However, in poor solvent (cyclohexane) vapor for PEO, crystalline structure changed to microphase separated structure in the square platelets due to the high mobility of PS blocks. Then breakout crystals dominated the morphology of the film. While, in good solvent (water) vapor for PEO, competition between nucleation and dissolution of crystallization caused the formation of imperfect crystals. Then imperfect crystals dissolved due to the high mobility of PEO blocks, and microphase separation dominated the morphology of the film. The gain of free volume of soluble block and the low swelling of crystalline block are keys for microphase separation and crystallization, respectively. (C) 2010 Elsevier Ltd. All rights reserved.
KeywordMicrophase Separation Crystallization Solvent Selectivity
DOI10.1016/j.polymer.2010.08.025
Indexed BySCI
Language英语
WOS IDWOS:000282354500034
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70730
Collection中国科学院化学研究所
Corresponding AuthorYu, Xinhong
AffiliationChinese Acad Sci, Grad Univ, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
Yang, Ping,Yu, Xinhong,Han, Yanchun. Transition between crystallization and microphase separation in PS-b-PEO thin film Influenced by solvent vapor selectivity[J]. POLYMER,2010,51(21):4948-4957.
APA Yang, Ping,Yu, Xinhong,&Han, Yanchun.(2010).Transition between crystallization and microphase separation in PS-b-PEO thin film Influenced by solvent vapor selectivity.POLYMER,51(21),4948-4957.
MLA Yang, Ping,et al."Transition between crystallization and microphase separation in PS-b-PEO thin film Influenced by solvent vapor selectivity".POLYMER 51.21(2010):4948-4957.
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