Investigation on Avrami Equation of PET and PBT in Crystallization

Abstract

Abstract: Depolarized light intensity technique was applied to investigating the isothermal crystallizing kinetics characteristics of polyethylene terephthalate(PET), polybutylene terephthalate(PBT) and PET-PBT, PBT-PBIcopolyesters under various conditions. The results show that the crystallization rate constants and the Avrami exponents change regularly under various conditions. Avrami exponents were mostly not integer. Therefore, it is presumed that Avrami exponent indicate the number of growth points in crystal nucleus.

Key words: Polyethylene terephthalate, Polybutylene terephthalate, Copolyester, Crystallizing kinetics

CLC Number:

O631

TrendMD:

BIAN Jie, YE Sheng-Rong, FENG Lin-Xian . Investigation on Avrami Equation of PET and PBT in Crystallization[J]. Chem. J. Chinese Universities, 2000, 21(9): 1481.

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Investigation on Avrami Equation of PET and PBT in Crystallization

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