Fast-scan chip-calorimeter measurement on the melting behaviors of melt-crystallized syndiotactic polystyrene |
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| Authors: | Zhaolei Li Xiaoming Jiang Huanhuan Gao Dongshan Zhou Wenbing Hu |
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| Affiliation: | 1. Key Laboratory of High Performance Polymer Materials and Technology, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China
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| Abstract: | We employed fast-scan chip-calorimeter (FSC) measurement (Flash DSC1) to study the melting of syndiotactic polystyrene after melt-crystallized at various cooling rates as well as after isothermally crystallized at various high temperatures. We attributed the observed double melting peak to a melting-recrystallization process of beta-form crystals upon heating, as evidenced by their variations with different cooling and heating rates. Our experiments demonstrated the advantages of FSC techniques in the investigation of crystallization and melting behaviors of polymer materials. |
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