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Plasticization and Crystallization of Poly(ethylene Terephthalate) Induced by Water

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Abstract

Commercial poly(ethylene terephthalate) (PET) was treated at R. H.>80% and room temperature for a set time. The glass transition temperature (Tg) decreases with the time of exposure to high humidity. The decrease in Tg is a result of plasticization. Our data indicate that the Tg of dry PET of 76-78°C may decrease to as low a temperature as 65-67°C when it is wet. Induced crystallization of PET in the presence of water reduces the cold crystallization temperature (Tc). The structure of water-induced crystals is imperfect and can be improved in perfection by annealing.

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Reference

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Authors and Affiliations

  1. Zhongshan University, Institute of Polymer Science, Guangzhou, P.R. of China

    Y. Chen, Z. Lin & S. Yang

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  1. Y. Chen
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  2. Z. Lin
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  3. S. Yang
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Chen, Y., Lin, Z. & Yang, S. Plasticization and Crystallization of Poly(ethylene Terephthalate) Induced by Water. Journal of Thermal Analysis and Calorimetry 52, 565–568 (1998). https://doi.org/10.1023/A:1010123723719

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  • DOI: https://doi.org/10.1023/A:1010123723719

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