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Title: Influence of Electrospun Nanofibrons Architecture in Separation Technology
Keywords: Nanofibers, separation, electrospinning, filtration, membrane, Electrospun Nanofibrous Membrane
Issue Date: 11-Jan-2010
Citation: RENUGA GOPAL (2010-01-11). Influence of Electrospun Nanofibrons Architecture in Separation Technology. ScholarBank@NUS Repository.
Abstract: The objective of the study is to relate the architecture of electrospun nanofibrous membrane (ENM) to filter performance and assess its feasibility in liquid separation. Through electrospinning, a variety of morphologies of Polysulfone ENMs were formed. Characterization methodologies were established and the influence of ENM?s architecture on membrane properties studied. It was observed that the morphology and thickness of an ENM significantly affected its pore-size distribution. As-spun ENMs were observed to possess micro-scale pores. Particle-challenge test showed that ENMs could be employed as filters for the removal of micro-particles, changing from a screen filter to a depth filter (for sub-micron particles). Surface modification techniques were employed to expand ENM?s role in ultrafiltration or nanofiltration. To develop ENMs suitable for nanofiltration, the feasibility of developing TFC-ENMs was explored. A new synthesis route was proposed that allowed an effective polyamide film to be formed and salt rejection results obtained thus far are encouraging. Besides size-exclusion based separations, ENMs also showed potential in affinity separation and membrane distillation. All of the above lead to one conclusion: ENMs do have a role to play in separation technology beyond that of air filtration.
Appears in Collections:Ph.D Theses (Open)

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