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Pervaporation separation of ethanol–water mixtures using ionically crosslinked blended polyacrylic acid (PAA)–nylon 6 membranes

✍ Scribed by Y. F. Xu; R. Y. M. Huang

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
420 KB
Volume
36
Category
Article
ISSN
0021-8995

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✦ Synopsis

The pervaporation separation of ethanol-water mixtures was carried out through a series of ionically crosslinked polyacrylic acid (PAA)-Nylon 6-blended membranes crosslinked to varying degrees in aluminum nitrate solution. The polyacrylic acid (PAA)-Nylon 6 membranes were cast from homogeneous PAA-Nylon 6 mixtures to various thicknesses and then crosslinked. Optimum pervaporation results were obtained from crosslinked blends containing 75 wt% Nylon 6 and 25 wt% PAA. These membranes have separation factors (water/ethanol) of 35-40 a t flux rates of 120-160 g/m2 h. The optimum crosslinking time was found to be approximately 35 h t o yield membranes with the best separation and flux rates a t 25 wt% PAA content.

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