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The significance of the zero-concentration diffusivity value obtained from integral desorption data
KTH, Superseded Departments, Polymer Technology.
2002 (English)In: Polymer, ISSN 0032-3861, E-ISSN 1873-2291, Vol. 43, no 1, 223-226 p.Article in journal (Refereed) Published
Abstract [en]

n-Hexane zero-concentration diffusivity in high density polyethylene obtained 'indirectly' from integral desorption measurements using the free volume concept was compared with the zero-concentration diffusivity obtained directly at low-n-hexane activities using a quartz-ring system. The difference between the results obtained by the indirect and direct methods was within the experimental error. The concentration dependence of the diffusivity predicted by the Cohen-Turnll-Fujita free volume theory was in accordance with experimental data.

Place, publisher, year, edition, pages
2002. Vol. 43, no 1, 223-226 p.
Keyword [en]
diffusion, sorption, desorption, small-molecule penetrants, free-volume, coefficients, polyethylene, membranes, kinetics, polymers
URN: urn:nbn:se:kth:diva-21042ISI: 000171706300026OAI: diva2:339739
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Hedenqvist, Mikael S.
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