Water-induced plasticization effect in polyelectrolyte membranes for fuel cell studied by ortho-positronium lifetime measurements
The ortho-positronium (o-Ps) is a powerful probe for the study of penetrant-induced plasticization effect in some polymers 1. In this study, the positron annihilation lifetime (PAL) measurement has been adapted for the study of water-induced plasticization behavior in typical polyelectrolyte membrane (PEM) such as Nafion. A better understanding of water-induced plasticization phenomena in PEM is important to design PEM for fuel cell because microstructure of PEM in the plasticized state is associated with the fuel cell performance. There are some structural characterization techniques for PEM, such as the three-dimensional transmission electron microscopy (3D-TEM), the differential scanning calorimetry (DSC) and the dispersive particle dynamics (DPD) simulation. However these techniques are mainly applied at mesoscopic level. In order to study PEM structure at free volume size level, PAL spectroscopy is expected.
A.Shimazu H.Oota K.En K.Ito Y.Kobayashi
Nitto Denko Corporation,1-1-2,Shimohozumi,Ibaraki,Osaka 567-8680,Japan National Institute of Advanced Industrial Science and Technology,Tukuba-shi,Ibaraki305-8568,Japan National Institute of Advanced Industrial Science and Technology,Tukuba-shi,Ibaraki 305-8568,Japan
国际会议
第九届国际正电子与正电子素国际会议(9th International Workshop on Positron and Positronium Chemistry)(PPC–9)
武汉
英文
14
2008-05-11（万方平台首次上网日期，不代表论文的发表时间）