Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.memsci.2013.07.049
DC Field | Value | |
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dc.title | Thin film composite membranes on ceramic for pervaporation dehydration of isopropanol | |
dc.contributor.author | Shi, G.M. | |
dc.contributor.author | Chung, T.-S. | |
dc.date.accessioned | 2014-10-09T07:04:45Z | |
dc.date.available | 2014-10-09T07:04:45Z | |
dc.date.issued | 2013-12-05 | |
dc.identifier.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 | |
dc.identifier.issn | 03767388 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/90394 | |
dc.description.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. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.memsci.2013.07.049 | |
dc.source | Scopus | |
dc.subject | Ceramic | |
dc.subject | Interfacial polymerization | |
dc.subject | PAS | |
dc.subject | Pervaporation | |
dc.subject | Thin film composite | |
dc.type | Article | |
dc.contributor.department | CHEMICAL & BIOMOLECULAR ENGINEERING | |
dc.description.doi | 10.1016/j.memsci.2013.07.049 | |
dc.description.sourcetitle | Journal of Membrane Science | |
dc.description.volume | 448 | |
dc.description.page | 34-43 | |
dc.description.coden | JMESD | |
dc.identifier.isiut | 000325168000004 | |
Appears in Collections: | Staff Publications |
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