標題: The effect of nano-sized silicate layers from montmorillonite on glass transition, dynamic mechanical, and thermal degradation properties of segmented polyurethane
作者: Tien, YI
Wei, KH
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: polyurethanes;glass transition;mechanical properties;heat resistance;degradation
公開日期: 14-十一月-2002
摘要: The glass transition temperature of the hard-segment phase and the storage modulus of segmented polyurethane increased substantially in the presence of a small amount of tethered nano-sized layered silicates from montmorillonite compared with their pristine state (by 44degreesC and by 2.8-fold, respectively). Furthermore, the heat resistance and degradation kinetics of these montmorillonite/polyurethane nanocomposites were enhanced, as shown by thermogravimetric analysis. In particular, a 40degreesC increase in the degradation temperature and a 14% increase in the degradation activation energy occurred in polyurethane containing 1 wt % trihydroxyl swelling agent-modified montmorillonite compared to that of the pristine polyurethane. (C) 2002 Wiley Periodicals, Inc.
URI: http://dx.doi.org/10.1002/app.11086
http://hdl.handle.net/11536/28385
ISSN: 0021-8995
DOI: 10.1002/app.11086
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 86
Issue: 7
起始頁: 1741
結束頁: 1748
顯示於類別:期刊論文


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