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Properties of Membranes Containing Semi-dispersed Carbon Nanotubes

Brunet, Léna and Lyon, D.Y. and Zodrow, K. and Rouch, J.C. and Caussat, Brigitte and Serp, Philippe and Remigy, Jean-Christophe and Wiesner, M.R. and Alvarez, P.J.J. Properties of Membranes Containing Semi-dispersed Carbon Nanotubes. (2008) Environmental Engineering Science, vol. 2 (n° 4). pp. 565-576. ISSN 1092-8758

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Official URL: http://dx.doi.org/10.1089/ees.2007.0076

Abstract

Carbon nanotubes exhibit superior mechanical and electrical properties that make them attractive for developing new composite materials. In this research, we examined the properties of ultrafiltration membranes made from carbon nanotube/polymer composites. Multiwalled carbon nanotubes (MWCNT, 4% w/w) were incorporated into polysulfone ultrafiltration membranes, prepared according to the wet phase inversion method. The dispersion of the nanotubes and the morphology of the membranes were observed by scanning electron microscopy. The membranes were characterized for surface roughness, contact angle, permeability, and mechanical properties. A partial deaggregation of the nanotubes leads to individual nanotubes within the polymer aswell as bundles nested in the pores. After addition of MWCNTs, the assymetric structure of the membrane, the permeability, and the hydrophobicity were not disturbed, but the roughness increased. Contrary to expectations,the tensile strength of the composite membrane was not improved while the elongation to failure decreased because of a lack of dispersion of the nanotubes. Growth of bacteria on the membranes was tested using two different methods, neither of which indicated an antibacterial effect due to the presence of nanotubes.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Rice University (USA)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Duke University (USA)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By: Hélène Dubernard
Deposited On:21 Oct 2008 12:22

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