3 years ago

Effects of aging on poly(1-trimethylsilyl-1-propyne) membranes irradiated with vacuum ultraviolet radiation for gas separation

Effects of aging on poly(1-trimethylsilyl-1-propyne) membranes irradiated with vacuum ultraviolet radiation for gas separation
Tetsuro Yoshioka, Kazukiyo Nagai, Taichi Motoo, Kentaro Saito, Yoshiki Miyashita
In this study, we investigated the effects of physical aging on the surface and gas-transport properties of highly gas permeable poly(1-trimethylsilyl-1-propyne) membranes irradiated with vacuum ultraviolet (VUV) radiation. VUV excimer lamp irradiation was performed on one side of the membrane for 6 or 60 min. The gas permeabilities for carbon dioxide (CO2) and nitrogen (N2) were determined through a volumetric measurement method at 23 °C. The gas permeabilities for CO2 and N2 increased temporarily at 7 days after 6 and 60 min of VUV irradiation of the membranes. The change in the gas permeability for N2 was more remarkable than that for CO2. These changes were related to the CO or SiOx ratio. The CO ratio was related to the gas permeability of the membranes VUV-irradiated for 6 min, whereas the SiOx ratio was related to the gas permeability of the membranes VUV-irradiated for 60 min. These changes affected the gas selectivities of the membranes. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 135, 45973.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/app.45973

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