期刊
ARABIAN JOURNAL OF CHEMISTRY
卷 12, 期 8, 页码 2183-2191出版社
ELSEVIER
DOI: 10.1016/j.arabjc.2014.12.019
关键词
Sago starch; Polyvinyl alcohol; Blend membrane; Pervaporation; Cross-linking
资金
- University Technology Malaysia [03H73]
- Chemical Engineering Department [03H73]
Sago starch is a relatively new polymeric material for development of a hydrophilic membrane for dehydration of alcohol/water. In this study sago based membranes were developed through casting technique for the dehydration of ethyl acetate at azeotropic conditions via pervaporation. Sago was blended with polyvinyl alcohol (PVA) to produce blended sago-PVA membranes with improved physical and chemical properties. The membranes were cross-linked using three different approaches; firstly, using glutaraldehyde, secondly using thermal treatment (80 degrees C) and thirdly by using both glutaraldehyde and thermal treatment. The effects of various cross-linking methods on the intrinsic properties of hydrophilic polymer membrane were investigated. The membranes were characterized using Fourier transform infrared (FTIR), differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA). The effect of operating conditions such as feed temperature and concentration on the separation factor and flux was discussed. Sago starch polymer shows very high performance and very good stability after polymer blending and cross-linking, which is promising for use in industrial applications. (C) 2015 The Authors. Published by Elsevier B.V. on behalf of King Saud University.
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