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Pervaporation separation of ethanol–water mixtures using crosslinked blended polyacrylic acid (PAA)–nylon 66 membranes
Author(s) -
Zhao X. P.,
Huang R. Y. M.
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070410918
Subject(s) - pervaporation , polyacrylic acid , membrane , materials science , permeation , chemical engineering , polymer chemistry , boiling , ethanol , chromatography , nuclear chemistry , chemistry , composite material , organic chemistry , polymer , engineering , biochemistry
The pervaporation separation of ethanol–water mixtures was carried out through a series of ionically crosslinked polyacrylic acid (PAA)–nylon 66 blended membranes crosslinked to varying degrees in aluminum nitrate solution. Optimum pervaporation results were obtained from crosslinked blends containing 75 wt % nylon 66 and 25 wt % PAA. The optimum crosslinking time was found to be between 30 and 40 h. The optimum operating temperatures of the pervaporation runs were found to be 2–3°C below the boiling points when the highest permeation flux reached 857.6 (g/m 2 h) and the best separation factors (water/ethanol) were 10.1.