Elastic Light Scattering Studies on Cold-crystallization Behaviors of Syndiotactic Polystyrene

doi:10.6023/A1106272

Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (03): 254-258.DOI: 10.6023/A1106272 Previous Articles Next Articles

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弹性散射法研究间规聚苯乙烯的冷结晶行为

郭建维^a, 刘明凯^a, 杨金^b, 周菊英^b, 杨琨^b, 陈旭东^b

a 广东工业大学轻工化工学院广州 510006;
b 中山大学化学与化学工程学院高分子研究所广州 510275

投稿日期:2011-06-27 修回日期:2011-09-07 发布日期:2011-10-19
通讯作者: 陈旭东 E-mail:cescxd@mail.sysu.edu.cn; guojw@gdut.edu.cn
基金资助:
广东省高校重点技术创新项目(No. 100187)和广东省科技计划项目(No. 0100121)资助项目.

Elastic Light Scattering Studies on Cold-crystallization Behaviors of Syndiotactic Polystyrene

Guo Jianwei^a, Liu Mingkai^a, Yang Jin^b, Zhou Juying^b, Yang Kun^b, Chen Xudong^b

a School of Light and Chemical Engineering, Guangdong University of Technology, Guangzhou 510006;
b Institute of Polymer Science, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275

Received:2011-06-27 Revised:2011-09-07 Published:2011-10-19
Supported by:
Project supported by the Key Technical Innovation Project of Universities of Guangdong Province (No.100187) and the Science and Technology Project of Guangdong Province (No. 0100121).

The cold-crystallization behavior of syndiotactic polystyrene (sPS) and its isothermal kinetics were studied by elastic scattering method in this work. It was shown that the scattering signal was very sensitive to the conformational change of sPS chains upon heating. The glass transition temperature (T_g) and cold-crystallization temperature (T_c) obtained by elastic scattering were in good agreement with those measured by DSC method. In addition, it can be clearly observed in the plot of temperature-dependent scattering intensity, there are several stages during the cold-crystallization process, i.e., nucleation phase, nucleus growth phase and secondary crystallization phase. By using isothermal scattering data and Arrhenius equation, the apparent activation energy of cold-crystallization of sPS was estimated to be 309 kJ/mol.

Key words: syndiotactic polystyrene, elastic scattering, cold crystallization, kinetics

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Guo Jianwei, Liu Mingkai, Yang Jin, Zhou Juying, Yang Kun, Chen Xudong. Elastic Light Scattering Studies on Cold-crystallization Behaviors of Syndiotactic Polystyrene[J]. Acta Chimica Sinica, 2012, 70(03): 254-258.

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弹性散射法研究间规聚苯乙烯的冷结晶行为

Elastic Light Scattering Studies on Cold-crystallization Behaviors of Syndiotactic Polystyrene

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