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dc.contributor.authorYe, Li Yi
dc.contributor.authorLiu, Qing Lin
dc.contributor.author刘庆林
dc.contributor.authorZhang, Qiu Gen
dc.contributor.authorZhu, Ai Mei
dc.contributor.author朱爱梅
dc.contributor.authorZhou, Guo Bo
dc.date.accessioned2011-06-02T14:00:33Z
dc.date.available2011-06-02T14:00:33Z
dc.date.issued2007-06
dc.identifier.citationJOURNAL OF APPLIED POLYMER SCIENCE,2007,105(6):3640-3648zh_CN
dc.identifier.issn0021-8995
dc.identifier.urihttp://dx.doi.org/doi:10.1002/app.26446
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/9345
dc.description.abstractPoly(vinyl alcohol) (PVA) blended with poly(ethylene glycol) (PEG) was crosslinked with tetraethoxysilane (TEOS) to prepare organic-inorganic PVA/ PEG/TEOS hybrid membranes. The membranes were then used for the dehydration of ethanol by pervaporation (PV). The physicochemical structure of the hybrid membranes was studied with Fourier transform infrared spectra (FTIR), wide-angle X-ray diffraction WXRD, and scanning electron microscopy (SEM). PVA and PEG were crosslinked with TEOS, and the crosslinking density increased with increases in the TEOS content, annealing temperature, and time. The water permselectivity of the hybrid membranes increased with increasing annealing temperature or time; however, the permeation fluxes decreased at the same time. SEM pictures showed that phase separation took place in the hybrid membranes when the TEOS content was greater than 15 wt %. The water permselectivity increased with the addition of TEOS and reached the maximum at 10 wt % TEOS. The water permselectivity decreased, whereas the permeation flux increased, with an increase in the feed water content or feed temperature. The hybrid membrane that was annealed at 130 degrees C for 12 h exhibited high permselectivity with a separation factor of 300 and a permeation flux of 0.046 kg m(-2) h(-1) in PV of 15 wt % water in ethanol. (c) 2007 Wiley Periodicals, Inc.zh_CN
dc.language.isoenzh_CN
dc.publisherJOHN WILEY & SONS INCzh_CN
dc.subjectpervaporationzh_CN
dc.subjectpoly(vinyl alcohol)zh_CN
dc.subjecttetraethoxysilanezh_CN
dc.subjecthybrid membraneszh_CN
dc.titlePervaporation characteristics and structure of poly(vinyl alcohol)/Poly(ethylene glycol)/Tetraethoxysilane hybrid membraneszh_CN
dc.typeArticlezh_CN


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