Pervaporation of fluoroethanol/water and methacrylic acid/water mixtures through PVA composite membranes

2,2,2-Trifluoroethyl methacrylate (TFEMA) is used in the preparation of functional water-repellent paints and optical fiber coating agents, and is manufactured by esterification of 2,2,2-trifluoroethanol (TFEA) and methacrylic acid (MA) via a dehydration process using azeotropic distillation. To sub...

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Bibliographic Details
Published inJournal of membrane science Vol. 247; no. 1; pp. 51 - 57
Main Authors Ahn, Sang-Man, Ha, Jong-Wook, Kim, Jeong-Hoon, Lee, Yong-Taek, Lee, Soo-Bok
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.02.2005
Subjects
Methacrylic acid/water
Pervaporation
Poly(vinyl alcohol) composite membrane
Trifluoroethanol/water
Methacrylic acid/water
Poly(vinyl alcohol) composite membrane
Trifluoroethanol/water
Pervaporation
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Summary:2,2,2-Trifluoroethyl methacrylate (TFEMA) is used in the preparation of functional water-repellent paints and optical fiber coating agents, and is manufactured by esterification of 2,2,2-trifluoroethanol (TFEA) and methacrylic acid (MA) via a dehydration process using azeotropic distillation. To substitute for the hazardous dehydration process, composite-type PVA pervaporation membranes were prepared using glutaraldehyde on a porous polyethersulfone support and their basic pervaporation properties were determined for TFEA/water and MA/water mixtures. The effect of the degree of crosslinking agent, feed concentration, and operating temperature on the pervaporation properties was determined. The PVA composite membranes showed excellent dehydration performances that are suitable for application to the esterification of TFEMA.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2004.09.005