Crystallization Induced Phase Separation: Unique Tool to Design Microfiltration Membranes with High Flux and Sustainable Antibacterial Surface

Sharma, Maya and Remanan, Sanjay and Madras, Giridhar and Bose, Suryasarathi (2017) Crystallization Induced Phase Separation: Unique Tool to Design Microfiltration Membranes with High Flux and Sustainable Antibacterial Surface. In: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 56 (8). pp. 2025-2035.

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Abstract

In the present study, a strategy has been used to fabricate microfiltration membranes through phase separation induced by crystallization in PVDF/PMMA polyvinylidene fluoride/poly(methyl methacrylate)] blends. Nanoporous channels in the membranes were designed by selective etching of PMMA and tuned by varying the PMMA concentration in the blend. The interconnectivity of the designed membranes was tuned by changing the concentration of PMMA in the blend. Scanning electron microscopy (SEM) studies showed that the spherulites appeared more compact in the 90/10 blend as compared to 70/30 and 60/40 PVDF/PMMA blends. The obtained flux was higher compared to membranes that are commercially available. Biofouling of membranes is a major concern, and in order to address this concern, silver was sputtered on the token membranes and leaching of Ag+ was monitored using inductively coupled plasma atomic emission spectroscopy (ICP). This strategy is ``scalable'' and is an industrially viable route the large scale.

Item Type:	Journal Article
Publication:	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Additional Information:	Copy right for this article belongs to the AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	19 May 2017 10:33
Last Modified:	19 May 2017 10:33
URI:	http://eprints.iisc.ac.in/id/eprint/56675

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