熔融聚合耐高温聚酰胺的非等温结晶动力学研究

doi:10.11896/j.issn.1005-023X.2017.06.031

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Abstract Poly(decamethylene terephthalamide) (PA10T) and decamethylene terephthalamide-aminoundecanoic copolyamide (PA10T/11) were prepared by melt polymerization. The non-isothermal crystallization behaviors of PA10T and PA10T/11 at di-fferent cooling rates were studied by means of differential scanning calorimetry (DSC). Avrami and Ozawa equations, along with the Mo equation were applied to obtain the non-isothermal crystallization kinetics of PA10T and PA10T/11. Moreover, the activation energy of non-isothermal crystallization of PA10T and PA10T/11 was explored by Kissinger, Takhor and Vyazovkin equations, respectively. The results showed that the mode of the nucleation and crystal growth may be the mixture with one-dimensional, needle-like and two-dimensional, circular. Meanwhile, there was heterogeneous nucleation phenomenon during the non-isothermal crystallization process. Jeziorny and Mo equations well described the non-isothermal crystallization kinetics of PA10T and PA10T/11, while Ozawa equation failed. With the increasing contents of 11-aminoundecanoic acid, the absolute values of activation energy of non-isothermal crystallization first decreased, then increased and finally decreased, which revealed that crystallization rates first increased, then decreased and finally increased.

Key words： melt polymerization high-temperature resistant polyamides aminoundecanoic acid crystallization kinetics non-isothermal crystallization

Published: 02 May 2018

CLC number:

TQ323.6

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	Articles by authors
	WANG Zhongqiang
	HU Guosheng
	ZHANG Jingting
	XU Jiusheng
	SHAO Zhengjie

Cite this article:

WANG Zhongqiang,HU Guosheng,ZHANG Jingting, et al. Study on Non-isothermal Crystallization Kinetics of High-temperature
Resistant Polyamides Prepared by Melt Polymerization[J]. Materials Reports, 2017, 31(6): 161-170.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.06.031 OR http://www.mater-rep.com/EN/Y2017/V31/I6/161

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