Temperature dependence of surface composition and morphology in polymer blend film
文献类型：期刊论文
| 作者 | You, Jichun1; Shi, Tongfei1; Liao, Yonggui1; Li, Xinglin2; Su, Zhaohui1; An, Lijia1 |
| 刊名 | POLYMER
 |
| 出版日期 | 2008-09-23 |
| 卷号 | 49期号:20页码:4456-4461 |
| 关键词 | Polymer Blend Surface Composition In Situ Xps |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2008.07.050 |
| 英文摘要 | Thin films of poly(methyl methacrylate) (PMMA) and poly(styrene-ran-acrylonitrile) (SAN) blend can phase separate upon heating to above its critical temperature. Temperature dependence of the surface composition and morphology in the blend thin film upon thermal treatment was studied using in situ X-ray photoelectron spectroscopy (XPS) and in situ atomic force microscopy (AFM). It was found that in addition to phase separation, the blend component preferentially diffused to and aggregated at the surface of the blend film, leading to the variation of surface composition with temperature. At 185 degrees C, above the critical temperature, the amounts of PMMA and SAN phases were comparable. At lower temperatures PMMA migrated to the surface, leading to a much higher PMMA surface content than in the bulk. The migration and preferential segregation of a blend component in thin films demonstrated here are responsible for the great difference between in situ and ex situ experimental (not real quenching or annealing) results of polymer blend films, and help explain the slow kinetics of surface phase separation at early stage for blend thin films reported in literature. This is significant for the control of surface properties of polymer materials. (c) 2008 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000259715100018 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/65539]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Su, Zhaohui |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, Natl Analyt Res Ctr Electrochem & Spect, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | You, Jichun,Shi, Tongfei,Liao, Yonggui,et al. Temperature dependence of surface composition and morphology in polymer blend film[J]. POLYMER,2008,49(20):4456-4461. |
| APA | You, Jichun,Shi, Tongfei,Liao, Yonggui,Li, Xinglin,Su, Zhaohui,&An, Lijia.(2008).Temperature dependence of surface composition and morphology in polymer blend film.POLYMER,49(20),4456-4461. |
| MLA | You, Jichun,et al."Temperature dependence of surface composition and morphology in polymer blend film".POLYMER 49.20(2008):4456-4461. |
入库方式： OAI收割
来源：化学研究所
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