Densely Packed Vertically Aligned Carbon Nanotube-Polymer Composite Membrane Fabrication and Characterization for Selective Filtration of Liquids
Research Area: | Volume 6,Issue 2, March 2017 | Year: | 2017 |
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Type of Publication: | Article | Keywords: | Polar And Non-Polar Liquid Filtration, Nano-Membranes, Vertically Aligned Carbon Nanotubes |
Authors: |
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Journal: | IJEIR | Volume: | 6 |
Number: | 2 | Pages: | 114-119 |
Month: | March | ||
ISSN: | 2277-5668 | ||
Abstract: | In this paper, the permeance of membranes based on the use of high-density Vertically-Aligned Carbon Nanotubes (VACNTs) in conjunction with Polydimethylsiloxane (PDMS), as filler material, are investigated for polar and non-polar liquids. Reactive ion etching is used to enhance the hydrodynamic flow properties of the VACNT membranes. Experimental results show that RIE treatment introduces hydroxyl ions (-OH) on the surface of the VACNT membranes, thus enhancing their gatekeeping activity and hydrophilicity simultaneously, and leading to an increase in flow rate for polar and non-polar liquids. The measured permeance improvement factors for water, ethanol, IPA, hexane and gasoline are 100%, 37.2%, 11.8%, 20.9% and 3.8%, respectively, with respect to Oxygen-plasma-treated VACNT membranes |
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