[1] CEA Grenoble, Grp Polymere Conducteur Ion, Dept Rech Fondamentale, F-38054 Grenoble 9, France
来源:
JOURNAL DE PHYSIQUE IV
|
1998年
/
8卷
/
P5期
关键词:
D O I:
10.1051/jp4:1998509
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Water uptake of perfluorinated ionomer membranes (Nafion(R)) is studied by small angles X-rays scattering (SAXS). The purpose is to determine if these membranes are subjected to the Schroeder paradox. This paradox is defined as a difference of water uptake for a membrane immersed in water or balanced in presence of a satured vapor pressure. Results from SAXS measurements indicate that the appearance of the paradox is dependent on the pretraitement of the membrane because of its water uptake memory.