期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 26, 期 3, 页码 196-200出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200400465
关键词
nanocomposites; polyhedral oligomeric silsesquioxane; polyurethanes
Octaaminophenyl polyhedral oligomeric silses-quioxane (OapPOSS) was used as a crosslinking agent together with 4,4'-methylenebis-(2-chloraniline) to prepare polyurethane networks containing POSS. Fourier transform infrared spectroscopy (FT-IR), dynamic mechanical analysis (DMA) and thermogravimetric analysis (TGA) were employed to characterize the POSS-reinforced polyurethane. THe POSS-containing PU networks displayed enhanced glass transition temperatures (T(g)s) and the storage moduli of the networks of the glassy state and rubber plateaus were also observed to be significantly higher than that of the control polyurethane although only a small amount of POSS was incorporated into systems. The results can be ascribed to the significant nanoscale reinforcement effect of POSS cages on the polyurethane matrix. TGA results showed the thermal stability was also improved with incorporation of POSS into the system.
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