Plasticization and crystallization of poly(ethylene terephthalate) induced by water

被引：21

作者：

Chen, Y ^{[1
]}

Lin, Z ^{[1
]}

Yang, S ^{[1
]}

机构：

[1] Zhongshan Univ, Inst Polymer Sci, Guangzhou, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1998年 / 52卷 / 02期

关键词：

plasticization effect of water; poly(ethylene terephthalate); water-induced crystallization;

D O I：

10.1023/A:1010123723719

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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

引用

页码：565 / 568

页数：4

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