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Citation: LI Guo-Min, LI Jun-Feng, LIU Jing-Zhi, WU Yong-Lie. The Influence of Quaternary Ammonium Salt on the Dehydration Properties of Blend Polyimide Membranes[J]. Chinese Journal of Applied Chemistry, ;2006, 23(3): 233-237. shu

The Influence of Quaternary Ammonium Salt on the Dehydration Properties of Blend Polyimide Membranes

1.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Corresponding author: WU Yong-Lie,
Received Date: 22 May 2005
Available Online: 3 November 2005
Fund Project: 国家"九七三"计划支持项目(2003CB615704) (2003CB615704)

The hydrophilicities of a series of blend modified polyimide membranes and the apparent viscosities of mixed solutions were investigated.The results show that both membrane hydrophilicities and solution viscosities were increased with increasing the quantity of quaternary ammonium salt(BAN) in the solution,and a viscosity enhancement phenomenon was observed.The dehydration properties of the blend hollow fiber membranes were tested,it was found that the increases of the pressure and the sweeping flux favored the dehydration performances of the blend membranes.Although the properties of membranes are not always improved with increasing the membrane hydrophilicity,when the quantity of quaternary ammonium salt(BAN) is appropriately increased,the dehydration properties of blend hollow fiber membranes would be improved effectively.
- blend modification,
- polyimide,
- quaternary ammonium salt,
- hydrophilicity,
- dehumidification
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