Preparation and Dissolutiondiffusion Performance of Poly(vinyl alcohol)/ Hybranched Polyester Crosslinked Pervaporation Membranes

doi:10.19491/j.issn.1001-9278.2019.11.007

Abstract

Abstract: A series of poly（vinyl alcohol）(PVA)/hyperbranched polyester (HBPE) crosslinked membranes were prepared by blending PVA and HBPE at different mass ratios, and their dissolution-diffusion mechanism and pervaporation properties were investigated. The results indicated that the water permeability coefficient of the crosslinked membranes increased at the elevated temperatures, and its variation trend was consistent with the water flux. The crosslinked membranes achieved a maximum water permeability coefficient of 71.952 g/m2·h at 55 ℃. The water flux was found to increase with an increase of HBPE content, and a maximum water flux of 185.726 g/m2·h was gained for the crosslinked membranes containing 40 wt% HBPE.

Key words: hyperbranched polvester, poly(vinyl alcohol), crosslinked membranes, dissolution-dif-fusion, pervaporation

CLC Number:

TQ051.893

WANG Yong. Preparation and Dissolutiondiffusion Performance of Poly(vinyl alcohol)/ Hybranched Polyester Crosslinked Pervaporation Membranes[J]. China Plastics, 2019, 33(11): 34-38.

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