Diffusion and permeation of water through unsaturated polyester resins - influence of resin curing

被引：40

作者：

Marais, S

Metayer, M ^{[1
]}

Nguyen, TQ

Labbe, M

Saiter, JM

机构：

[1] UFR Sci, UMR 6522, F-76821 Mt St Aignan, France

[2] UFR Sci, Lab Etud & Caracterisat Amorphes & Polymeres, F-76821 Mt St Aignan, France

来源：

EUROPEAN POLYMER JOURNAL | 2000年 / 36卷 / 03期

关键词：

limit diffusion coefficient; plasticization effect; polyester resin; curing process;

D O I：

10.1016/S0014-3057(99)00080-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The diffusion and permeation properties of liquid water through an isophthalic-maleic acid-propanediol-based copolyester resin were studied with a highly sensitive permeameter. The value of the parameters of the exponential dependence of the diffusion coefficient on the water concentration decreases with the curing extent, except that of the plasticization coefficient, which decreases after a post-curing at 120 degrees C, Infrared-spectrophotometric and calorimetric data show that the curing involves mainly a polymerization of styrene during the curing at 25 degrees C, and a crosslinking by the opening of the double bonds on the polyester chains in the subsequent curing step at 80 degrees C. The water sorption by the resin results in a 20 degrees C-decrease in the glass transition temperature of the water saturated resin. lending to the diffusivity enhancement by the plasticization effect. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：453 / 462

页数：10

共 23 条

[1] KINETIC-STUDY OF THE CROSS-LINKING OF UNSATURATED POLYESTER BASED ON ISOPHTHALIC ACID VIA DSC .1. ISOTHERMAL STUDY [J].