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|標題:||Effects of Crosslinking Modification on the O-2/N-2 Separation Characteristics of Poly(phenyl sulfone)/Poly(bisphenol A-co-4-nitrophthalic anhydride-co-1,3-phenylenediamine) Blend Membranes||作者:||Weng, T.H.
|關鍵字:||crosslinking;gas permeation;selectivity;gas-separation;transport-properties;polyimide membranes;co2/ch4;separation;ethyl cellulose;permeability;permeation;permselectivity;pervaporation;chitosan||Project:||Journal of Applied Polymer Science||期刊/報告no：:||Journal of Applied Polymer Science, Volume 116, Issue 3, Page(s) 1254-1263.||摘要:||
A series of blend membranes of poly(phenyl sulfone) (PPSU) with poly(bisphenol A-co-4-nitrophthalic anhydride-co-1,3-phenylenediamine) (PBNPI) were prepared through a solution casting method. This was done to examine the permeation characteristics of oxygen and nitrogen. The effect of the PPSU/PBNPI ratio on the membrane structure and O-2/N-2 separation performance were investigated. The results show that the permeability increased remarkably with the content of PPSU, whereas the selectivity decreased slightly. To enhance the selectivity of O-2/N-2, the blend membranes were further crosslinked with a p-xylylenediamine agent via the immersion method. According to the Fourier transform infrared analysis, the N-H group was formed on the imide group of PBNPI. Therefore, we suggest that during the crosslinking modification, the PBNPI served as a crosslinkable polymer; this resulted in increased crosslinking efficiency with PBNPI content. The high-resolution X-ray diffraction and melting point method results show that crosslinking modification improved the selectivity with an acceptable loss in permeability along with increased crystallinity. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1254-1263, 2010
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