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Pervaporation Separation of Isopropyl Alcohol-water Mixtures Using Poly (dimethyl siloxane) Membrane  

Kim, Ji Seon (Department of Chemical Engineering, Hannam University)
Lee, Choong Sub (Airrane Co. Ltd.)
Cho, Eun Hye (Department of Chemical Engineering, Hannam University)
Rhim, Ji Won (Department of Chemical Engineering, Hannam University)
Publication Information
Membrane Journal / v.23, no.3, 2013 , pp. 245-250 More about this Journal
Abstract
In this study, the pervaporation separation characteristics were investigated for the iso-propyl alcohol (IPA)-water system using PDMS dense membranes. The ratio, 9:1 and 10:1, of the basic material based on RTV-655 and crosslinking agent were used to prepare dense membranes at the reaction temperatures, 40, 60, and $80^{\circ}C$. And these resulting membranes were characterized by pervaporation technique in terms of permeabilities and separation factors for the feed composition of IPA 85 wt% at the operating temperatures, 25, 35, 45, and $55^{\circ}C$. Typical results of permeabilities $148g/m^2{\cdot}hr$ at $55^{\circ}C$ for 9:1 membrane and the selectivity 17 at $55^{\circ}C$ for 10:1 membrane were obtained, respectively.
Keywords
pervaporation; Poly(dimethyl siloxane); PDMS; Isopropyl alcohol(IPA);
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