Size Effects on Miscibility and Glass Transition Temperature of Binary Polymer Blend Films

摘要：

After determining the size dependent miscibility of binary polymer blend films using molecular dynamics simulation and thermodynamics, the size dependent glass transition temperatures Tg(w,D) of several polymer blend films in miscible ranges are determined by computer simulation and the Fox equation where w is the weight fraction of the second component and D denotes thickness of films. The Tg(w,D) function of a thin film can decrease or increase as D decreases depending on their surface or interface states. The computer simulation results arc consistent with available experimental results and theoretical results for polymer blend films of PPO/PSpoly(2,6-dimcthyl-1,4-phenylene oxide)/polystyrenc and stereoregular PMMA/PEO poly(methyl methacrylale)/poly(ethylene oxide). The physical background of the above results is related to the root of mean square displacement of thin films in their different regions.

作者: Zhi Min Ao Qing Jiang

作者单位: Key Laboratory of Automobile Materials, Ministry of Education, and Department of Materials Science and Engineering, Jilin University, Changchun 130025, China

会议类型: 国际会议

会议名称: The 3rd International Conference of Molecular Simulations and Applied Informatics Technologies(第三届国际分子模拟与信息技术应用学术会议)

会议地点: 杭州

会议语种:英文

页码: 605-610

在线出版日期: 2007-04-01（万方平台首次上网日期，不代表论文的发表时间）