Effects of crystallization temperature on the polymorphic behavior of syndiotactic polystyrene |
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| Authors: | Yuying LiJiasong He Wei QiangXiao Hu |
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| Affiliation: | a State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
b School of Material Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, Singapore 639798 |
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| Abstract: | The influence of crystallization temperature on formation of the α- and β-form crystals of syndiotactic polystyrene (sPS) was investigated by X-ray diffraction and non-isothermal differential scanning calorimetry analysis. For sPS samples without any thermal history, the crystallization temperature must be the intrinsic factor controlling the formation the α and β-form crystals. Being crystallized at different cooling rate from the melt, sPS forms the β-form crystal until the temperature cooled down to about 230 °C, and α-form crystal can only be obtained when the temperature was below about 230 °C. |
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| Keywords: | Syndiotactic polystyrene Polymorphism Crystallization temperature |
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