The effect of nano-sized silicate layers from montmorillonite on glass transition, dynamic mechanical, and thermal degradation properties of segmented polyurethane
作者： Yun. I. Tien , Kung Hwa Wei
DOI: 10.1002/APP.11086
关键词: Polyurethane 、 Composite material 、 Nanocomposite 、 Thermogravimetric analysis 、 Dynamic mechanical analysis 、 Thermal stability 、 Materials science 、 Concentration effect 、 Montmorillonite 、 Glass transition
摘要: The glass transition temperature of the hard-segment phase and storage modulus segmented polyurethane increased substantially in presence a small amount tethered nano-sized layered silicates from montmorillonite compared with their pristine state (by 44°C by 2.8-fold, respectively). Furthermore, heat resistance degradation kinetics these montmorillonite/polyurethane nanocomposites were enhanced, as shown thermogravimetric analysis. In particular, 40°C increase 14% activation energy occurred containing 1 wt % trihydroxyl swelling agent-modified to that polyurethane. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 1741–1748,
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