Ring-shaped morphology in H-shaped block copolymer thin films
文献类型：期刊论文
| 作者 | Wei, Yuhan1; Li, Binyao1; Han, Yanchun1; Pan, Caiyuan2 |
| 刊名 | SOFT MATTER
 |
| 出版日期 | 2008 |
| 卷号 | 4期号:12页码:2507-2512 |
| ISSN号 | 1744-683X |
| DOI | 10.1039/b806258g |
| 英文摘要 | The formation of ring-shaped structures in an H-shaped block copolymer [a poly(ethylene glycol) backbone with polystyrene branches, i.e., (PS)(2)PEG(PS)(2)] thin film was investigated when it was annealed in saturated PEG-selective acetonitrile vapor. Our results clearly indicate that ring formation is determined by the initial morphology of the spin-coated film, the solvent vapor selectivity and the environmental temperature of the solvent-annealing process. Only the films with the initial core-shell cylindrical structure in strongly PEG-selective acetonitrile vapor could form the ring-shaped structures. Environmental temperature has an influence on the formation mechanisms. It was proven that the rings arising from the core-shell cylindrical structure of the pristine spin-coated (PS)(2)PEG(PS)(2) film were caused by the migration of the PEG shells to the top surface in the process of PEG-selective vapor annealing at the environmental temperature of 15 degrees C. While at a higher environmental temperature (25 degrees C), the degree of swelling of the film and the chains' mobility increased and the formation mechanism of the rings in this situation was similar to that in dilute solution. |
| 语种 | 英语 |
| WOS记录号 | WOS:000261726400028 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64961]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Han, Yanchun |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Yuhan,Li, Binyao,Han, Yanchun,et al. Ring-shaped morphology in H-shaped block copolymer thin films[J]. SOFT MATTER,2008,4(12):2507-2512. |
| APA | Wei, Yuhan,Li, Binyao,Han, Yanchun,&Pan, Caiyuan.(2008).Ring-shaped morphology in H-shaped block copolymer thin films.SOFT MATTER,4(12),2507-2512. |
| MLA | Wei, Yuhan,et al."Ring-shaped morphology in H-shaped block copolymer thin films".SOFT MATTER 4.12(2008):2507-2512. |
入库方式： OAI收割
来源：化学研究所
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