In situ cross-linked-PDMS/BPPO membrane for the recovery of butanol by pervaporation
Article first published online: 17 OCT 2013
Copyright © 2014 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 131, Issue 6, March 15, 2014
How to Cite
2014), In situ cross-linked-PDMS/BPPO membrane for the recovery of butanol by pervaporation. J. Appl. Polym. Sci., 131, doi: 10.1002/app.40004, , , and (
- Issue published online: 20 DEC 2013
- Article first published online: 17 OCT 2013
- Manuscript Accepted: 25 SEP 2013
- Manuscript Received: 28 JUL 2013
- brominated polyphenylene oxide (BPPO);
- polydimethylsiloxane (PDMS)
In this study, an in situ crosslinked polydimethylsiloxane/brominated polyphenylene oxide (c-PDMS/BPPO) membrane on ceramic tube has been prepared for the recovery of butanol by pervaporation. A series of BPPO with different bromide-substituted ratio were firstly synthesized through Wohl–Ziegler reaction. BPPO and PDMS were sequentially assembled and in situ crosslinked to form the final c-PDMS/BPPO membrane. The results of solid-state NMR and Differential Scanning Calorimeter demonstrated that the c-PDMS/BPPO copolymer has a crosslinking structure and the SEM result proved the coverage of ceramic tube by copolymer layer. The effects of preparation conditions including dipping time and bromide-substituted ratio of BPPO on the membrane performance were studied. The pervaporation experiments of butanol–water mixture indicated that the c-PDMS/BPPO membrane exhibited an acceptable flux of 220 g·m−2·h−1 and high separation factor of 35 towards butanol, when the bromide-substituted ratio was 34 wt % and the dipping time was 1.33 h. Moreover, the c-PDMS/BPPO membrane performed excellent stability in an about 200 h continuous butanol recovery, as compared to the PDMS membrane. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2014, 131, 40004.