Gas Permeability of a Buckypaper Membrane

Gas permeability has been measured through a carbon nanotube-based “buckypaper” membrane and through commercially available porous anodized alumina membranes with 200 nm nominal pore dimensions. Permeation relationships through the alumina membrane are consistent with Knudsen-type diffusion. Permeat...

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Veröffentlicht in:	Nano letters 2003-02, Vol.3 (2), p.189-192
Hauptverfasser:	Cooper, Sarah M, Chuang, Helen F, Cinke, Martin, Cruden, Brett A, Meyyappan, M
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Membranes
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Gas permeability has been measured through a carbon nanotube-based “buckypaper” membrane and through commercially available porous anodized alumina membranes with 200 nm nominal pore dimensions. Permeation relationships through the alumina membrane are consistent with Knudsen-type diffusion. Permeation behavior in the “buckypaper” membrane, however, shows a strong dependence of permeability on pressure that is not explained by typical transport mechanisms. It is suggested that elastic deformation of the membrane from the pressure differential may contribute to this behavior.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl0259131