The Pervaporation Properties of the Interpenetrating Network Membrane of Poly(vinyl alcohol) and Poly(vinyl pyrrolidone)(Ⅱ)

Abstract

Abstract: Anovel interpenetrating network(IPN) membrane of PVA/PVPcrosslinked by chemical crosslinking agent glutaraldehyde and water soluble photocrosslinking agent 4,4′diazostilbene2,2′disulfonic acid disodium salt(DAS) was prepared and the membrane performance in dehydration of some organic solvent by pervaporation as a function of IPNcomposition was investigated. It was found that the IPNmembrane possesses better separation properties compared with noncrosslinking blend. For a majority of organic solvents, the permeation increases with the increasing of PVPcontent in IPNwhile the selectivity to water decreases. In case of THF, both the selectivity and the permeation flux of IPNmembrane are obviously better than that of PVAmembrane, no matter what the PVPcontent is in IPNmembrane. The tension test showed that the mechanical properties of IPNare also remarkably improved.

Key words: Pervaporation, Interpenetrating network membrane(IPN), DAS, Crosslinking

CLC Number:

O631

TrendMD:

ZHOU Ji-Qing, YE Yun-Fen, HU Xiao-Hua, PING Zheng-Hua. The Pervaporation Properties of the Interpenetrating Network Membrane of Poly(vinyl alcohol) and Poly(vinyl pyrrolidone)(Ⅱ)[J]. Chem. J. Chinese Universities, 2000, 21(2): 301.

References

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