Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.memsci.2013.07.049
Title: | Thin film composite membranes on ceramic for pervaporation dehydration of isopropanol | Authors: | Shi, G.M. Chung, T.-S. |
Keywords: | Ceramic Interfacial polymerization PAS Pervaporation Thin film composite |
Issue Date: | 5-Dec-2013 | Citation: | Shi, G.M., Chung, T.-S. (2013-12-05). Thin film composite membranes on ceramic for pervaporation dehydration of isopropanol. Journal of Membrane Science 448 : 34-43. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2013.07.049 | Abstract: | We have developed novel thin film composite (TFC) membranes on ceramic substrates (referred as ceramic TFC membranes thereafter) for pervaporation dehydration of isopropanol (IPA) by using interfacial polymerization (IP) of m-phenylenediamine (MPD) and trymesoylchoride (TMC) to create ultra-thin polyamide films as selective layers. Prior to IP, a gutter layer of polydopamine (PDA) or polyethyleneimine (PEI) was deposited on α-alumina ceramic surfaces to improve the adhesion of polyamide thin films onto the ceramic. It was found that the PEI-coated ceramic substrate provided better adhesion with the polyamide thin film than the original and PDA-coated ones owing to its smoother surface. Polydimethylsiloxane (PDMS) was employed to seal defects on ceramic TFC membranes and significantly improved the performance of pervaporation dehydration of IPA with a flux of 6.05kg/m2h and a separation factor 1396 at 80°C. Moreover, the developed ceramic TFC membrane shows high stability after 120h operation. Positron annihilation spectroscopy (PAS) analyses revealed that the newly developed membrane has an ultrathin polyamide layer of 79nm and a PDMS coating of ~26nm. This study demonstrates the promising application of ceramic TFC membranes for pervaporation dehydration of organic solutions. © 2013 Elsevier B.V. | Source Title: | Journal of Membrane Science | URI: | http://scholarbank.nus.edu.sg/handle/10635/90394 | ISSN: | 03767388 | DOI: | 10.1016/j.memsci.2013.07.049 |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
SCOPUSTM
Citations
43
checked on Apr 9, 2021
WEB OF SCIENCETM
Citations
37
checked on Apr 9, 2021
Page view(s)
106
checked on Apr 12, 2021
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.