Investigation of Temperature Dependency of Morphological Properties of Thermoplastic Polyurethane using WAXS and SAXS Monitoring  

作　　者：Steffen Thomas Witzleben Katharina Walbrueck Stephanie Elisabeth Klein Margit Schulze 

机构地区：[1]Department of Natural Sciences, Bonn-Rhein-Sieg University of Applied Sciences, von-Liebig-Strasse 20, Rheinbach D53359,Germany

出　　处：《Journal of Chemistry and Chemical Engineering》2015年第8期494-499,共6页化学与化工（英文版）

摘　　要：Polyether and polyether/ester based TPU （thermoplastic polyurethanes） were investigated with wide-angle XRD （X-ray diffraction） and SAXS （small angle X-ray scattering）. Furthermore, SAXS measurements were performed in the temperature range of 30 ℃ to 130 ℃. Polyether based polymers exhibit only one broad diffraction signal in a region of 2 θ 15° to 25°. In case of polyurethanes with ether/ester modification, the broad diffraction signal arises with small sharp diffraction signals. SAXS measurements of polymers reveal the size and shape of the crystalline zones of the polymer. Between 30 ℃ and 130 ℃ the size of the crystalline zone changes significantly. The size decreases in most of investigated TPU. In the case of Desmopan 9365D an increase of the particle size was observed.

关 键 词：Thermoplastic polyurethanes MORPHOLOGY mechanical properties SAXS WAXS temperature influence CRYSTALLINITY 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] O613.72[理学—无机化学]