Please use this identifier to cite or link to this item:
|標題:||Synthesis and characterization of biopolymeric blend membranes based on sodium alginate for the pervaporation dehydration of isopropanol/water mixtures||作者:||Rao, Ksvk
|關鍵字:||grafting;hydrophilic polymers;pervaporation;sodium alginate;swelling;ethanol-water mixtures;linked chitosan membranes;polymer network;membranes;composite membranes;separation;diffusion;transport;acid||Project:||Separation Science and Technology||期刊/報告no：:||Separation Science and Technology, Volume 43, Issue 5, Page(s) 1065-1082.||摘要:||
Synthesized graft copolymers of hydroxyethylcellulose and acrylamide (HEC-g-AAm) were prepared by solution polymerization method. The grafting reaction was confirmed by Fourier transform infrared spectroscopy and differential scanning calorimetry. The graft copolymers were blended in different ratios with sodium alginate (NaAlg), and the membranes were prepared by the solution casting method. The resulted membranes were then crosslinked with glutaraldehyde (GA) in acetone-water medium. Swelling experiments were performed on the blend membranes in water-isopropanol mixtures at 30 degrees C. Pervaporation experiments were performed at 30 degrees C for the feed mixtures ranging from 10-50wt.% of water in water-isopropanol mixtures. Flux and selectivity of the membranes increased with an increasing amount of HEC-g-AAm copolymers in the blend membrane. The membrane NaAlg/HEC-g-AAm-30 appears to have a good potential for dehydrating 10wt.% water with a high selectivity of 2036 and a substantial water flux of 1.036kg/m(2) center dot h. Flux increased with increasing amount of water in the feed, but selectivity decreased considerably.
|Appears in Collections:||期刊論文|
Show full item record
TAIR Related Article
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.