Self-assembly morphology effects on the crystallization of semicrystalline block copolymer thin film
文献类型：期刊论文
| 作者 | Wei, Yuhan; Pan, Caiyuan; Li, Binyao; Han, Yanchun |
| 刊名 | JOURNAL OF CHEMICAL PHYSICS
 |
| 出版日期 | 2007-03-14 |
| 卷号 | 126期号:10 |
| ISSN号 | 0021-9606 |
| DOI | 10.1063/1.2711437 |
| 英文摘要 | Self-assembly morphology effects on the crystalline behavior of asymmetric semicrystalline block copolymer polystyrene-block-poly(L-lactic acid) thin film were investigated. Firstly, a series of distinctive self-assembly aggregates, from spherical to ellipsoid and rhombic lamellar micelles (two different kinds of rhombic micelles, defined as rhomb 1 and rhomb 2) was prepared by means of promoting the solvent selectivity. Then, the effects of these self-assembly aggregates on crystallization at the early stage of film evolution were investigated by in situ hot stage atomic force microscopy. Heterogeneous nucleation initiated from the spherical micelles and dendrites with flat on crystals appeared with increasing temperature. At high temperature, protruding structures were observed due to the thickening of the flat-on crystals and finally more thermodynamically stable crystallization formed. Annealing the rhombic lamellar micelles resulted in different phenomena. Turtle-shell-like crystalline structure initiated from the periphery of the rhombic micelle 1 and spread over the whole film surface in the presence of mostly noncrystalline domain interior. Erosion and small hole appeared at the surface of the rhombic lamellar micelle 2; no crystallization like that in rhomb 1 occurred. It indicated that the chain-folding degree was different in these two micelles, which resulted in different annealing behaviors. (c) 2007 American Institute of Physics. |
| 语种 | 英语 |
| WOS记录号 | WOS:000244895600030 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62935]  |
| 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, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China 3.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Yuhan,Pan, Caiyuan,Li, Binyao,et al. Self-assembly morphology effects on the crystallization of semicrystalline block copolymer thin film[J]. JOURNAL OF CHEMICAL PHYSICS,2007,126(10). |
| APA | Wei, Yuhan,Pan, Caiyuan,Li, Binyao,&Han, Yanchun.(2007).Self-assembly morphology effects on the crystallization of semicrystalline block copolymer thin film.JOURNAL OF CHEMICAL PHYSICS,126(10). |
| MLA | Wei, Yuhan,et al."Self-assembly morphology effects on the crystallization of semicrystalline block copolymer thin film".JOURNAL OF CHEMICAL PHYSICS 126.10(2007). |
入库方式： OAI收割
来源：化学研究所
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