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Pervaporation of Fluoroethanol/Water Mixtures through Commercial Poly(vinyl alcohol) Membranes  

Lee Soo-Bok (한국화학연구원 계면재료공정연구실)
Ahn Sang-Man (한국화학연구원 계면재료공정연구실, 충남대학교 화학공학과)
Choi Seung-Hak (한국화학연구원 계면재료공정연구실)
Kim Jeong-Hoon (한국화학연구원 계면재료공정연구실)
Lee Yong-Taek (충남대학교 화학공학과)
Publication Information
Membrane Journal / v.14, no.3, 2004 , pp. 258-262 More about this Journal
Abstract
Trifluoroethyl methacrylate (TFEMA) is used in the preparation of water-repellant paints and optical fiber clading materials, and is manufactured by esterification reaction of trifluoroethanol (TFEA) and methacrylic acid (MA). To estimate the applicability of a pervaporation membrane for the esterification TFEMA esterification, the basic pervaporation properties for TFEA/water mixture were determined using a commercial poly(vinyl alcohol) membrane (GFT Membrane $Pervap^{\circledR}1005$). The effect of TFEA concentration in feed solution and operating temperature on the pervaporation properties was determined. The total permeation flux decreased with increasing TFEA concentration from 90 to 99 wt%, but the separation factor of TFEA/water showed maximum values at 95 wt% TFEA concentration. With increasing feed temperatures from 50 to 8$0^{\circ}C$, the permeation flux and separation factor increased. Higher separation factors and permeation fluxes were observed at 8$0^{\circ}C$ of feed temperature. This pervaporation performance confirmed that the commercial pervaporation membrane could be successfully applied to esterification of TFEMA.
Keywords
trifluoroethaol; esterification; pervaporation;
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