A unique morphology of freeze-dried poly(ethylene oxide) and its transformation
文献类型：期刊论文
| 作者 | Gu, FM ; Bu, HS ; Zhang, Z |
| 刊名 | POLYMER
 |
| 出版日期 | 2000 |
| 卷号 | 41期号:21页码:7605 |
| 关键词 | MOLECULAR SEGREGATION FRACTIONS CRYSTALLIZATION NUCLEATION CRYSTALS GROWTH MELT |
| ISSN号 | 0032-3861 |
| 通讯作者 | Gu, FM: Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China. |
| 中文摘要 | Freeze-dried poly(ethylene oxide) (PEO) samples were prepared from a 1 x 10(-2) wt.% solution in benzene. After isothermal crystallization at 318.2 +/- 0.1 K, a unique spherulite-like morphology with special inner structure was observed by transmission electron microscope. The crystal structure was identified to be the triclinic form. The molecular chains in it adopt the planar zigzag conformation, which was only found in the sample under tension. Howe-ver, it was revealed in this paper that the triclinic crystals formed in the freeze-drying process can exist at room temperature for a long period. After being heated at a temperature far above the equilibrium melting point of PEO and cooled down to 318.2 +/- 0.1 K, they transformed to the common monoclinic form. The resulting crystals show a great variety of regular polygonal shapes with multiple twin patterns. (C) 2000 Elsevier Science Ltd. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33341]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Gu, FM,Bu, HS,Zhang, Z. A unique morphology of freeze-dried poly(ethylene oxide) and its transformation[J]. POLYMER,2000,41(21):7605. |
| APA | Gu, FM,Bu, HS,&Zhang, Z.(2000).A unique morphology of freeze-dried poly(ethylene oxide) and its transformation.POLYMER,41(21),7605. |
| MLA | Gu, FM,et al."A unique morphology of freeze-dried poly(ethylene oxide) and its transformation".POLYMER 41.21(2000):7605. |
入库方式： OAI收割
来源：物理研究所
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