Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (4): 647.

• Articles • Previous Articles     Next Articles

Pervaporation Properties of Cross-linked PVA/PVP Blend Membrane(Ⅰ)

HU Xiao-Hua, PING Zheng-Hua, ZHU Qing, DING Zhi-Ming, DING Ya-Di   

  1. Department of Macromolecular Science, Fudan University, Shanghai, 200433
  • Received:1996-12-23 Online:1998-04-24 Published:1998-04-24

Abstract: The pervaporation properties of the ploy(vinyl alcohol)(PVA) and poly(vinyl pyrrolidone)(PVP) blend membranes crosslinked by glutaraldehyde and a water soluble diazo compound(4,4′-diazidostilbene-2,2′-disulfonic acid disodium salt(DAS) in the separation of ethanol/water mixture were studied. It was found that the pervaporation properties of the membranes are changed as the PVPcontent changed, and the selectivity of the membranes are improved after crosslinking.

Key words: Pervaporation, PVA/PVP blend membrane, Crosslinking

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