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

Full Papers


郭建维a, 刘明凯a, 杨金b, 周菊英b, 杨琨b, 陈旭东b   

  1. 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;
  • 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 Jianweia, Liu Mingkaia, Yang Jinb, Zhou Juyingb, Yang Kunb, Chen Xudongb   

  1. 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 (Tg) and cold-crystallization temperature (Tc) 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