NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS

Fang-li Lou; Yi Xu; Huan Pang; Yan-hui Chen; Jia-zhuang Xu; Zhong-ming Li; Ai Lu

doi:10.1007/s10118-013-1235-6

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NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS

PAPER | Updated：2023-01-03

- NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS
- NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS
- Chinese Journal of Polymer Science 2013年31卷第3期页码：462-470
- Affiliations：
  
  a.College of Polymer Science and Engineering and State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
  b.Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, China
- Author bio：
  
  **Zhong-ming Li (李忠明), E-mail: zmli@scu.edu.cn
- Funds：
  
  NSFC(20904059);Key Project of 863 Program of China(2009AA034605)
- DOI：10.1007/s10118-013-1235-6
  中图分类号：
- 收稿：2012-05-30，
  
  修回：2012-08-22，
  
  录用：2012-09-07，
  
  纸质出版：2013-03
- Accepted：
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Fang-li Lou, Yi Xu, Huan Pang, 等. NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS[J]. Chinese Journal of Polymer Science, 2013,31(3):462-470.

Fang-li Lou, Yi Xu, Huan Pang, et al. NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS[J]. Chinese Journal of Polymer Science, 2013, 31(3): 462-470.
Fang-li Lou, Yi Xu, Huan Pang, 等. NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS[J]. Chinese Journal of Polymer Science, 2013,31(3):462-470. DOI： 10.1007/s10118-013-1235-6.

Fang-li Lou, Yi Xu, Huan Pang, et al. NON-ISOTHERMAL CRYSTALLIZTION KINETICS OF POLY(PHENYLENE SULFIDE) WITH LOW CROSSLINKING LEVELS[J]. Chinese Journal of Polymer Science, 2013, 31(3): 462-470. DOI： 10.1007/s10118-013-1235-6.

摘要

Abstract

Poly(phenylene sulfide) (PPS) with different crosslinking levels was successfully fabricated by means of hightemperature isothermal treatment (IT). The crosslinking degree of PPS was increased with IT time as revealed by Fouriertransform infrared spectroscopy and dynamic viscosity measurements. Its influence on the non-isothermal crystallization behaviors of PPS was studied by differential scanning calorimeter (DSC). The crystallization peak temperature of PPS with 6 h IT was 15 K higher than that of the one with 2 h IT at 30 K/min cooling rate. The non-isothermal crystallization data were also analyzed based on the Ozawa model. The Ozawa exponent

decreased from 3.5 to 2.2 at 232℃ with the increase of the IT time

suggestive of intensive thermal oxidative crosslinking reducing the crystallite dimension as PPS crystal grew. The reduced cooling crystallization function

(

) was indicative of the larger activation energy of crosslinked PPS chain diffusion into crystal lattice

resulting in a slow crystal growth rate. Additionally

the overall crystallization rate of PPS was also accelerated with the increase of crosslinking degree from the observation of polarized optical micrograph. These results indicated that the chemical crosslinked points and network structures formed during the high-temperature isothermal treatment acted as the effective nucleating sites

which greatly promoted the crystallization process of PPS and changed the type of nucleation and the geometry of crystal growth accordingly.

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