Abstract
The concept of the diffusion coefficient, D, and Fick’s Laws are considered. Measurements of D and of solubility, s, of gases in polymers are outlined. The factors influencing D and s of gases in polymers are discussed. Methods for obtaining D and s of organic vapours in elastomeric polymers are given. The effects of concentration, temperature, diffusant size and polymer properties on D are correlated using free volume ideas. Equilibrium vapour uptake is discussed. Vapour sorption anomalies in glassy polymers and the reasons for these are outlined. D, s, and permeability, P, of water in both hydrophobic and hydrophilic polymers are considered and interpreted in terms of hydrogen bonding to polymer sites and water clustering by hydrogen bonding. D, s, and P in non-uniform polymers are considered and discussed in terms of the effects of fillers, crystallites and layer structures.
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Park, G.S. (1986). Transport Principles—Solution, Diffusion and Permeation in Polymer Membranes. In: Bungay, P.M., Lonsdale, H.K., de Pinho, M.N. (eds) Synthetic Membranes: Science, Engineering and Applications. NATO ASI Series, vol 181. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4712-2_3
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DOI: https://doi.org/10.1007/978-94-009-4712-2_3
Publisher Name: Springer, Dordrecht
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