Isothermal crystallization kinetics of poly(trimethylene terephthalate) under the influence of self-seeding nucleation |
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| Authors: | Xingquan He Demin Xie Decai Yang |
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| Institution: | (1) Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China;(2) State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China |
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| Abstract: | The effect of self-seeding nucleation on the crystallization behavior of poly(trimethylene terephthalate) (PTT) was studied.
Differential scanning calorimetry (DSC) indicated that the crystallization temperature of PTT notably increased after self-seeding
nucleation. Avrami equation was applied in the analysis of the isothermal crystallization process of PTT. The resulting average
value of the Avrami exponent at n = 3.34 suggests that primary crystallization may correspond to a three-dimensional spherulitic growth. Self-seeding nucleation,
leading to a decrease in active energy for crystallization and chain folding work, promotes the overall crystallization process
of PTT.
Translated from Acta Polymerica Sinica, 2006, (3): 414–417 (in Chinese) |
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| Keywords: | poly(trimethylene terephthalate) self-seeding nucleation crystallization kinetics |
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