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Citation: Li Haipeng, Shen Jiarui, Zhu Fangming. Kinetic Study of the Nonisothermal Crystallization of Syndiotactic Polystyrene[J]. Chinese Journal of Applied Chemistry, ;1999, 16(2): 31-34. shu

Kinetic Study of the Nonisothermal Crystallization of Syndiotactic Polystyrene

1.
a Department of Polymer Science and Engineering, South China University of Technology, Guangzhou 510641;
2.
b Institute of Polymer Science, Zhongshan University, Guangzhou

Received Date: 22 June 1998
Available Online: 14 October 1998

The non-isothermal crystallization and its kinetics of syndiotactic polystyrene (sPS) have been studied by DSC technique. The methods of Ozawa and Jeziorny for non-isothermal crystallization are applied to analyse the DSC data. It is found that the half-time of sPS crystallization decreases as an exponential function of the cooling rate ranged from 2.5 to 40℃/min. The non-isothermal crystallization of sPS follows the Ozawa equation, but fails to agree with the Avrami equation in the Jeziorny method. The values of the Avrami exponent determined by the Ozawa equation are between 3.6~4.1, higher than those reported values obtained by means of isothermal methods.
- syndiotactic polystyrene,
- non-isothermal crystallization,
- kinetics,
- DSC
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