Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ces.2006.12.022
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dc.titleThe development of chemically modified P84 Co-polyimide membranes as supported liquid membrane matrix for Cu(II) removal with prolonged stability
dc.contributor.authorYang, Q.
dc.contributor.authorChung, T.-S.
dc.contributor.authorXiao, Y.
dc.contributor.authorWang, K.
dc.date.accessioned2014-06-17T07:50:14Z
dc.date.available2014-06-17T07:50:14Z
dc.date.issued2007-03
dc.identifier.citationYang, Q., Chung, T.-S., Xiao, Y., Wang, K. (2007-03). The development of chemically modified P84 Co-polyimide membranes as supported liquid membrane matrix for Cu(II) removal with prolonged stability. Chemical Engineering Science 62 (6) : 1721-1729. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ces.2006.12.022
dc.identifier.issn00092509
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/64696
dc.description.abstractWe have demonstrated, for the first time, P84 co-polyimide with novel chemical cross-linking modification can be effectively used as the polymeric microporous matrix for supported liquid membrane (SLM) applications. Both asymmetric and symmetric flat membranes with high tortuosity were fabricated via the phase inversion method. It is found that the symmetric membrane outperforms the asymmetric one because the former may provide (1) balanced forces exerted at two aqueous/membrane interfaces and (2) the formation of more stable stagnant layers than the latter. However, the performance of both unmodified asymmetric and symmetric flat membranes deteriorates severely after use for 20-30 h. A novel chemical modification agent, p-xylenediamine/water, was discovered and shows effectiveness to improve P84 membrane stability for SLM. The improved SLM stability is attributed to the reduced pore size and the enhanced hydrophobicity on the membrane surfaces. The newly developed chemically modified SLM has a similar lifetime compared with other SLM systems using commercial PTFE as the support matrix. © 2007 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ces.2006.12.022
dc.sourceScopus
dc.subjectChemical cross-linking
dc.subjectStability
dc.subjectSupported liquid membrane
dc.typeArticle
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.description.doi10.1016/j.ces.2006.12.022
dc.description.sourcetitleChemical Engineering Science
dc.description.volume62
dc.description.issue6
dc.description.page1721-1729
dc.description.codenCESCA
dc.identifier.isiut000245098200012
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