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Crystallization kinetics of two polyesters with different main chain rigidity

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Abstract

The crystallization kinetics of two polyesters, poly(p-phenylene sebacate) (PPS) and poly(p-phenylene isophthalate) (PPI), have been investigated by DSC. The nonisothermal data indicate that the relative crystallization rate of PPI was slower than that of PPS due to the more rigid nature of the PPI the chains. The isothermal crystallization data were analyzed by the Avrami equation, 1 − X(t) = exp(−ktn). PPS exhibited Avrami exponent (n), values of about 4, indicating that its isothermal crystallization followed a process of homogeneous nucleation, spherical growth and a growth type of interface control. PPI exhibited Avrami exponent values of about 3 indicating its isothermal crystallization followed a process of homogeneous nucleation, a possible disc growth geometry and an interface control growth type. Possibly, the bending structure and rigid nature of PPI forced its growth to follow a three dimensional growth during crystallization.

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Authors and Affiliations

  1. Department of Chemical Engineering, Far East College, Tainan, Taiwan, Republic of China

    Chi-Ch’ang Cheng

  2. Department of Chemical Engineering, National I-Lan Institute of Agriculture and Technology, I-Lan, 26015, Taiwan, Republic of China

    Hong-Bing Tsai

Authors
  1. Chi-Ch’ang Cheng
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  2. Hong-Bing Tsai
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Cheng, CC., Tsai, HB. Crystallization kinetics of two polyesters with different main chain rigidity. J Polym Res 4, 129–133 (1997). https://doi.org/10.1007/s10965-006-0016-0

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  • DOI: https://doi.org/10.1007/s10965-006-0016-0

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