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Permeation of vapors through polymers at low temperature and elevated pressures (1967)

Henley, Ernest J. ; Santos, Marcos Luiz Dos

Hoboken, NJ : Wiley-Blackwell

AIChE Journal 13 (1967), S. 1117-1119

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ISSN: 0001-1541

Keywords: Chemistry ; Chemical Engineering

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology

Notes: The permeation of propane, propylene, ethane, and ethylene through 0.0051-cm. thick polyethylene films was measured at temperatures between 25° and -30°C. Plots of P vs. 1/T for C3H8, C3H6, and C2H6 were saucer shaped, the activation energies changing from positive (endothermic) to negative (exothermic) over a narrow temperature range. This change is attributed to a plasticization-condensation phenomenon and a change in intermolecular potentials.

Additional Material: 3 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/aic.690130615

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