Studies on the Fusion Heat of Poly(ether ether ketone ketone)Poly(ether biphenyl ether ketone ketone) Copolymers

Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (7): 1133.

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Studies on the Fusion Heat of Poly(ether ether ketone ketone)Poly(ether biphenyl ether ketone ketone) Copolymers

NA Hui¹, WU Zhong-Wen¹, ZHANG Hong-Fang², Yang Bao-Quan², WANG Shang-Er², MO Zhi-Shen²

1. Department of Chemistry, Jilin Universtiy, Changchun 130023;
2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130023

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

Abstract

Abstract: on the basis of DSCmeasurements,the △H_f⁰ values of the fusion heat for PEEKK-PEBEKK copolymers with various biphenyl contents were obtained by using thermodynamics statistical theory proposed by Flory and graphical method of the specific volume-fusion heat.The results reveal that △H_f⁰ values determined by these two methods for PEEKK-PEBEKKcopolymers with various biphenyl content are nearly the same,and that △H_f⁰ values are closely dependent on biphenyl content.△H_f⁰ value is minimum at n_B=0.35.

Key words: Poly(ether ether ketoner ketone)-poly(ether biphenyl ether ketone ketone)copolymer, Fusion heat, DSC

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NA Hui, WU Zhong-Wen, ZHANG Hong-Fang, Yang Bao-Quan, WANG Shang-Er, MO Zhi-Shen. Studies on the Fusion Heat of Poly(ether ether ketone ketone)Poly(ether biphenyl ether ketone ketone) Copolymers[J]. Chem. J. Chinese Universities, 1996, 17(7): 1133.

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Studies on the Fusion Heat of Poly(ether ether ketone ketone)Poly(ether biphenyl ether ketone ketone) Copolymers

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