Interpenetration of two polymer chain globules
文献类型：期刊论文
| 作者 | Liang, TN; Zhang, ZQ; Li, T; Yang, XZ |
| 刊名 | POLYMER
 |
| 出版日期 | 2004-02-15 |
| 卷号 | 45期号:4页码:1365-1371 |
| 关键词 | Interpenetration Globule Molecular Dynamics |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2003.05.001 |
| 英文摘要 | Molecular dynamics was performed in a model system of two chain globules so that a process of the two globules merging was just simulated. It was found that this merging process was recognized as two stages, the wetting stage and the interpenetration stage. The interpenetration does not occur to partially encountered segments of the two globules, even though the chain segments are in the molten state. In the first stage, the touched two globules change their shapes rapidly from a sphere to a half-ball respectively. This obviously shows that the change in shape is mastered by the surface tension. In the second stage, the interpenetration happens to the two-chain sphere with an initial structure of each chain in a half-ball shape. A different molecular mechanism of chain diffusion has been found for this system. It is the chain loop crawling among the globule surface. Characterization of the interpenetration process was carried out by several means of analyzing the trajectory files. It was found that in the interpenetration stage there is a fast evolution and a lentitude period. The interpenetration is a conformational entropy driving process, and takes a half time for the lentitude period, which regards just 15% of total free energy difference. (C) 2003 Published by Elsevier Ltd. |
| 语种 | 英语 |
| WOS记录号 | WOS:000188593400035 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55813]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, XZ |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, TN,Zhang, ZQ,Li, T,et al. Interpenetration of two polymer chain globules[J]. POLYMER,2004,45(4):1365-1371. |
| APA | Liang, TN,Zhang, ZQ,Li, T,&Yang, XZ.(2004).Interpenetration of two polymer chain globules.POLYMER,45(4),1365-1371. |
| MLA | Liang, TN,et al."Interpenetration of two polymer chain globules".POLYMER 45.4(2004):1365-1371. |
入库方式： OAI收割
来源：化学研究所
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