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The significance of the zero-concentration diffusivity value obtained from integral desorption data
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- Hedenqvist, Mikael S. (author)
- KTH,Polymerteknologi
- Doghieri, F. (author)
- (creator_code:org_t)
- 2002
- 2002
- English.
- In: Polymer. - 0032-3861 .- 1873-2291. ; 43:1, s. 223-226
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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.
Keyword
- diffusion
- sorption
- desorption
- small-molecule penetrants
- free-volume
- coefficients
- polyethylene
- membranes
- kinetics
- polymers
Publication and Content Type
- ref (subject category)
- art (subject category)
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