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Diffusion and solubility of n-alkanes in polyolefines

Diffusion und Löslichkeit von n-Alkanen in Polyolefinen
: Koszinowski, J.

Journal of applied polymer science 31 (1986), No.5, pp.1805-1826
ISSN: 0021-8995
ISSN: 1097-4628
Journal Article
Fraunhofer ILV ( IVV) ()
diffusion; Kunststoff; Löslichkeit; n-Alkan; polyolefin

The diffusion and partition coefficients (relative solubility constants) of n-alkanes (from carbon nos. 12-32) have been determined by a permeation method (pouch method) for the polyolefines LDPE, HDPE, and PP-copolymer, and PP-homopolymer at room temperature. The activation energies for the diffusion are interpreted in the meaning of the rate transition theory. Correlations exist between the activation energy delta E and the heat of vapourization delta vH, as well as between the activation energy delta E and the Arrhenius preexponential factors D0. These correlations are useful for the prediction of the diffusion coefficients of n-alkanes with carbon numbers lager than 32.