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Gas Separation Properties of Polyimide Membranes Based on 2,2-Bis(3-amino-4-hydroxyphenyl)hexafluoropropane

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Abstract:

A series of polyimides (PIs) by thermal imidization of polyamic acid (PAA) were prepared in order to investigate the gas separation property. The single gas permeability of He, H2, CO2, O2, N2 and CH4 were measured and compared in order to determine the effect of the reaction content and thermal imidization temperature on the gas separation properties. The results showed that the higher the thermal imidization temperature is, the more beneficial for the gas separation properties of the PI membranes. The optimum polycondensation reaction content on preparing PI was 25 wt%. The highest ideal selectivity of He/CH4, H2/CH4, CO2/CH4 and H2/N2 is 2814.88, 1652.38, 216.63 and 191.58, respectively.

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Periodical:

Advanced Materials Research (Volumes 524-527)

Pages:

1241-1244

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.524-527.1241

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Online since:

May 2012

Authors:

Yan Hong Zheng, Yu Zhai, Jian Mei Guo, Hong Yan Yu, Lian Cai Wang, Xin Miao Zeng

Keywords:

Gas Permeation, Ideal Selectivity, Polyimide

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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