Effect of Heat Treatment on the Parameters of Crystal Structure and Degree of Crystallinity of Poly (aryl-ether-cther-ketone)

Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (7): 1142.

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Effect of Heat Treatment on the Parameters of Crystal Structure and Degree of Crystallinity of Poly (aryl-ether-cther-ketone)

LIU Tian-Xi¹, ZHANG Hong-Fang¹, HAN Ping¹, MO Zhi-Shen¹, NA Hui², CAO Jun-Kui², WU Zhong-Wen²

1. Polymer Physics Laboratory, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022;
2. Department of Chemistry, Jiling University, Changchun 130023

Received:1995-07-11 Online:1996-07-24 Published:1996-07-24

Abstract

Abstract: The variations of unit cell parameters and crystallite size of nine PEEKsamples treated at various temperatures have been studied by using Wide-Angle X-ray Diffraction(WAXD)The resu lts indicate a decrease in unit cell parameter a,b and c but an increase in crystallite size L_hkl with the increase heat treatment temperature.Based on X-ray scattering intensity theory and using the graphic multipeak resolution method,the formula of degree of crystallinity (W_c,X) for PEEK is derived.The results calculated are compatible with the density measurement and calorimetry.

Key words: PEEK, WAXD, Parameter of crystal structure, Crystallite size, Degree of crystallinity

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LIU Tian-Xi, ZHANG Hong-Fang, HAN Ping, MO Zhi-Shen, NA Hui, CAO Jun-Kui, WU Zhong-Wen. Effect of Heat Treatment on the Parameters of Crystal Structure and Degree of Crystallinity of Poly (aryl-ether-cther-ketone)[J]. Chem. J. Chinese Universities, 1996, 17(7): 1142.

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Effect of Heat Treatment on the Parameters of Crystal Structure and Degree of Crystallinity of Poly (aryl-ether-cther-ketone)

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