期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 47, 期 19, 页码 1927-1934出版社
WILEY
DOI: 10.1002/polb.21788
关键词
epoxy; nanocomposites; photopolymerization; POSS; thermal properties
资金
- National Science Council (Taiwan, Republic of China) [NSC-94-2216-E-238-003]
We have prepared epoxy/polyhedral oligomeric silsesquioxane (POSS) nanocomposites by photopolymerization from octakis(glycidylsiloxy)octasilsesquioxane (OG) and diglycidyl ether of bisphenol A. We used nuclear magnetic resonance, Raman, and Fourier transform infrared spectroscopies to characterize the chemical structure of the synthetic OG. Differential scanning calorimetry and dynamic mechanical analysis (DMA) revealed that the nanocomposites possessed higher glass transition temperatures than that of the pristine epoxy resin. Furthermore, DMA indicated that all of the nanocomposites exhibited enhanced storage moduli in the rubbery state, a phenomenon that we ascribe to both the nano-reinforcement effect of the POSS cages and the additional degree of crosslinking that resulted from the reactions between the epoxy and OG units. Thermogravimetric analysis revealed that the thermal stability of the nanocomposites was better than that of the pristine epoxy. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 47: 1927-1934, 2009
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据