Abstract
To improve the pervaporation performances of a poly(4-methyl-1-pentene) (TPX) membrane, this study attempts to utilize chemical initiation which includes a hydrophilic monomer of glycidyl methacrylate (GMA) homografted on to poly(4-methyl-1-pentene) (TPX-g-PGMA). The sulfonating process was also applied to improve the hydrophilicity of the TPX-g-PMGA membrane. The effects of feed composition, feed temperature and molar volume of alcohol on the pervaporation performances of the modified TPX membrane were investigated. The water permselectivity and permeation rate for both modified TPX membranes were higher than those of the unmodified TPX membrane. The separation factor towards water and the permeation rate through the sulfonated TPX-g-PGMA membrane (TPX-g-PGMAS) with a degree of grafting 5.8% were 49 and 100 g/m 2hr, respectively.
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