Premium
Pervaporation separation of pentane–alcohol mixtures using nylon 6–polyacrylic acid (PAA) ionically crosslinked membranes. II. Experimental data and theoretical interpretation
Author(s) -
Huang Robert Y. M.,
Balakrishnan Malini,
Rhim JiWon
Publication year - 1992
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.1992.070460111
Subject(s) - pervaporation , polyacrylic acid , membrane , pentane , materials science , thermodynamics , polymer chemistry , chemical engineering , acrylic acid , chemistry , polymer , organic chemistry , permeation , composite material , copolymer , physics , biochemistry , engineering
Novel ionically cross‐linked blended membranes of nylon 6 and poly(acrylic acid) (PAA) were studied for the pervaporation separation of the binary organic mixture of pentane and methanol. Membranes of composition 25 wt % PAA were used after cross‐linking. The experimental data obtained from the pervaporation runs were compared with the theoretical values of the individual permeabilities for binary mixtures predicted by the modified Fels and Huang model. This new model is based on an extension of the free volume theory and the introduction of Flory–Huggins thermodynamics for the calculations of the binary interaction parameters and the diffusion coefficients. The calculated values of permeabilities obtained from this modified model were reasonably close to the experimental values.