Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.desal.2011.06.009
Title: Hot pressing of electrospun membrane composite and its influence on separation performance on thin film composite nanofiltration membrane
Authors: Kaur, S. 
Barhate, R. 
Sundarrajan, S. 
Matsuura, T.
Ramakrishna, S. 
Keywords: Electrospinning
Electrospun nanofibrous membrane
Hot pressing
Interfacial polymerization
Surface roughness
Thin film composite nanofiltration membrane
Issue Date: 15-Sep-2011
Source: Kaur, S., Barhate, R., Sundarrajan, S., Matsuura, T., Ramakrishna, S. (2011-09-15). Hot pressing of electrospun membrane composite and its influence on separation performance on thin film composite nanofiltration membrane. Desalination 279 (1-3) : 201-209. ScholarBank@NUS Repository. https://doi.org/10.1016/j.desal.2011.06.009
Abstract: The primary objective of this paper was to investigate the influence of hot pressing on electrospun nanofibrous membrane (ENM) properties and subsequently the separation of salt after interfacial polymerization was carried out on the surface of ENM. Polyacrylonitrile solution was electrospun on a Hollytex backing material and this composite layer was subsequently subjected to hot pressing at 87 °C at pressures of 0.14, 0.28 or 0.41. MPa. The bubble-point of the hot pressed ENM significantly reduced with increasing pressure. Overlapping fibers fused at 0.28. MPa and over fusing occurred at 0.41. MPa hence accounting for the drastic decrease in bubble-point. In addition, the thickness of the ENM layer decreased with applied pressure as it compressed the ENM layer. A decrease in bubble-point resulted in a drastic decrease in pure water flux. Interfacial polymerization was carried out on the surface of ENM. The interfacial polymerized control was not able to withstand higher pressures. However, with treatment of 0.14. MPa onwards, the composite membrane was resilient at higher pressure and there wasn't a drastic difference in the average separation of the interfacially polymerized ENM. When compared to NF90, ENM-1 and ENM-2 had fluxes more than 3 folds. However the rejection was compromised by 8-12%. © 2011 Elsevier B.V.
Source Title: Desalination
URI: http://scholarbank.nus.edu.sg/handle/10635/60455
ISSN: 00119164
DOI: 10.1016/j.desal.2011.06.009
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