Preparation of gas separation composite membrane

Abstract

Abstract PURPOSE:To prepare a gas separation membrane for oxygen concentration by electrically charging the surface of a porous support by corona discharge treatment and bringing the porous support into contact with a glassy polymer thin film which is spread on water surface and has a gas separation function. CONSTITUTION:A polyethersulfone porous support 10 is negatively charged by corona discharge by applying -2kV voltage to a corona charger 13 with a high voltage generator 12. A 1% polytrimethylsilylpropylene solution in benzene is sprayed from a spraying outlet to give a polytrimethylsilylpropylene thin film 3. The negatively charged polyethersulfone porous support 10 is then brought into contact with the polytrimethylsilylpropylene thin film 3 so as to make the thin film 3 adhere to the polyethersulfone porous support 10 owing to electrostatic force and obtain a gas separation composite membrane 11.

Inventors

• 👤 Koji Takemoto
• 👤 浩二 竹本
• 👤 Tasuke Sawada
• 👤 太助 沢田
• 👤 Shigeru Ryuzaki
• 👤 粒崎　繁
• 👤 Masanori Kimura
• 👤 雅典 木村

Bibliographic Details