中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
External potential dynamic studies on the formation of interface in polydisperse polymer blends

文献类型:期刊论文

作者Qi, Shuanhu; Zhang, Xinghua; Yan, Dadong
刊名JOURNAL OF CHEMICAL PHYSICS
出版日期2010-02-14
卷号132期号:6
关键词Interface Structure Polymer Blends Polymer Structure
ISSN号0021-9606
DOI10.1063/1.3314730
英文摘要The formation of interface from an initial sharp interface in polydisperse A/B blends is studied using the external potential dynamic method. The present model is a nonlocal coupling model as we take into account the correlation between segments in a single chain. The correlation is approximately expressed by Debye function and the diffusion dynamics are based on the Rouse chain model. The chain length distribution is described by the continuous Schulz distribution. Our numerical calculation indicates that for a wide range of the Flory-Huggins parameter the broadening of interface with respect to time obeys a power law at early time, and the power indices are the same for both monodisperse and polydisperse blends. The power index is larger than that in the local coupling model. However, there is no unified scaling form of the broadening of the interface width if only the interfacial width at equilibrium is taken into account as the characteristic length of the system, because the correlation makes an extra characteristic length in the system, and the polydispersity is related to this length.
语种英语
WOS记录号WOS:000274516400028
出版者AMER INST PHYSICS
源URL[http://ir.iccas.ac.cn/handle/121111/69801]  
专题中国科学院化学研究所
通讯作者Qi, Shuanhu
作者单位Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci BNLMS, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Qi, Shuanhu,Zhang, Xinghua,Yan, Dadong. External potential dynamic studies on the formation of interface in polydisperse polymer blends[J]. JOURNAL OF CHEMICAL PHYSICS,2010,132(6).
APA Qi, Shuanhu,Zhang, Xinghua,&Yan, Dadong.(2010).External potential dynamic studies on the formation of interface in polydisperse polymer blends.JOURNAL OF CHEMICAL PHYSICS,132(6).
MLA Qi, Shuanhu,et al."External potential dynamic studies on the formation of interface in polydisperse polymer blends".JOURNAL OF CHEMICAL PHYSICS 132.6(2010).

入库方式: OAI收割

来源:化学研究所

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