AbstractThe diffusion and partition coefficients (relative solubility constants) ofn‐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 δEand the heat of vapourization δvHsas well as between the activation energy δEand the Arrhenius preexponential factorsD0. These correlations are useful for the prediction of the diffusion coefficients ofn‐alkanes with carbon numbers la
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