Diffusivity data are presented for the o‐xylene–polyethylene system in the temperature range 125–175°C. The diffusion coefficient increases slightly as the solvent concentration increases near the pure polymer limit. Although the concentration and temperature dependences of the diffusivity for this system are different from what are typically observed for polymer–solvent systems, they are consistent with the free‐volume theory of diffusion.
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Vrentas et al. (1982) studied this question.
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