Plasticization and Crystallization of Poly(ethylene Terephthalate) Induced by Water |
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Authors: | Chen Y Lin Z Yang S |
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Institution: | (1) Zhongshan University, Institute of Polymer Science, Guangzhou, P.R. of China |
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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.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | plasticization effect of water poly(ethylene terephthalate) water-induced crystallization |
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