Monitoring water uptake of polyurethanes by in situ fluorescence technique

被引:11
|
作者
Hakala, K [1 ]
Vatanparast, R [1 ]
Vuorimaa, E [1 ]
Lemmetyinen, H [1 ]
机构
[1] Tampere Univ Technol, Inst Mat Chem, FIN-33101 Tampere, Finland
关键词
fluorescence technique; water uptake; polyurethane polymer; in situ fluorescence;
D O I
10.1002/app.1998
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 water uptake of three polyurethane adhesives was studied by an in situ fluorescence method applying extrinsic fluorescent probes, The measurements were made in water immersion at 50 and 80 degreesC, and in water vapor at 50 degreesC. An intensity ratio method was applied, in which ratios of the highest and lowest intensity changes in the fluorescence emission bands were used to determine the amount of water sorbed in the polymer films. The ratio method was used to compare the fluorescence data with those obtained by a conventional gravimetric method. Comparable results were obtained. (C) 2001 John Wiley & Sons, Inc.
引用
收藏
页码:1593 / 1599
页数:7
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