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Diffusion of saturated hydrocarbons in low density polyethylene (LDPE) films

Corresponding Author

Abdul-Fattah A. Asfour

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4===Search for more papers by this author

M. Saleem,

M. Saleem

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4

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D. De Kee,

D. De Kee

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4

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B. H. Harrison,

B. H. Harrison

Department of National Defence, Defence Research Establishment Ottawa, Ottawa, Ontario, Canada K1A OZ4

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Abdul-Fattah A. Asfour,

Corresponding Author

Abdul-Fattah A. Asfour

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4===Search for more papers by this author

M. Saleem,

M. Saleem

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4

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D. De Kee,

D. De Kee

Chemical Engineering Department, University of Windsor, Windsor, Ontario, Canada N9B 3P4

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B. H. Harrison,

B. H. Harrison

Department of National Defence, Defence Research Establishment Ottawa, Ottawa, Ontario, Canada K1A OZ4

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First published: 20 October 1989

https://doi.org/10.1002/app.1989.070380808

Citations: 33

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Abstract

The diffusion coefficients at zero penetrant concentration, D₀, of n-heptane, n-heptane, n-octane, n-decane, and 2,2,4-trimethylpentane (TMP) in LDPE were obtained in the range of 25–50°C, using the desorption method. The dependence of D₀ on the size and shape of the penetrant is reported. It was found that D₀ decreases with increasing penetrant molecule size. The activation energies of diffusion in the temperature range of 25–50°C increase with increasing penetrant molecule size and are independent of temperature. The results are interpreted in terms of the free volume theory and semiquantitative estimates of the free volume parameters are reported.

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Volume38, Issue8

20 October 1989

Pages 1503-1514

Diffusion of saturated hydrocarbons in low density polyethylene (LDPE) films

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Diffusion of saturated hydrocarbons in low density polyethylene (LDPE) films

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