Transition between crystallization and microphase separation in PS-b-PEO thin film Influenced by solvent vapor selectivity
文献类型：期刊论文
| 作者 | Yang, Ping; Yu, Xinhong; Han, Yanchun |
| 刊名 | POLYMER
 |
| 出版日期 | 2010-10-01 |
| 卷号 | 51期号:21页码:4948-4957 |
| ISSN号 | 0032-3861 |
| 关键词 | Microphase Separation Crystallization Solvent Selectivity |
| DOI | 10.1016/j.polymer.2010.08.025 |
| 英文摘要 | In 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. |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000282354500034 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/70729]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yu, Xinhong |
| 作者单位 | Chinese Acad Sci, Grad Univ, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：化学研究所
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