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High Performance Polymers
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Structures and Gas Separation Properties of Silicone-Containing Polyimides

Yasuharu Yamada

Nippon Steel Chemical Co. Ltd, Sakinohama, Tobata-ku, Kitakyusyu-shi, 804 Japan

Nobuyuki Furukawa

Advanced Materials & Technology Research Laboratories, Nippon Steel Co. Ltd, 1618 Ida, Nakahara-ku, Kawasaki-shi, 211 Japan

Yoshiharu Tujita

Department of Materials Science & Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466, Japan

In order to obtain polymer materials suitable for thermally stable gas separation membranes, silicone-containing polyimides (SPIs) with various chemical structures and silicone contents were prepared, and the relationship between the chemical structures and the gas separation properties was studied. The permeability of gases such as oxygen, nitrogen, carbon dioxide and methane increased with the silicone content, while the permselectivity decreased. Therefore the permeability and the permselectivity were found to be controlled by the silicone content as well as the chemical structure of the SPIs.

High Performance Polymers, Vol. 9, No. 2, 145-151 (1997)
DOI: 10.1088/0954-0083/9/2/006
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