Citation
Y. Chen et al., PLASTICIZATION AND CRYSTALLIZATION OF POLY(ETHYLENE-TEREPHTHALATE) INDUCED BY WATER, JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 52(2), 1998, pp. 565-568
Citations number
3
Categorie Soggetti
Chemistry Analytical","Chemistry Physical
Journal title
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
ISSN journal
13886150
→ ACNP
Volume
52
Issue
2
Year of publication
1998
Pages
565 - 568
Database
ISI
SICI code
0368-4466(1998)52:2<565:PACOPI>2.0.ZU;2-U
Abstract
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 decre
ase 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 t
he presence of water reduces the cold crystallization temperature (T-c
). The structure of water-induced crystals is imperfect and can be imp
roved in perfection by annealing.