Abstract
An estimate of the pore size of a gel may be obtained by comparing the self-diffusion coefficients of probe molecules in free solution and in the gel. Depending on the relative size of the probe and the mesh and on specific interactions, probe molecules show self-diffusion coefficients in gels ranging from nearly free diffusion to almost complete entrapment. Forced Rayleigh scattering (FRS) is a light scattering technique for studying the self-diffusion of molecules over a wide range of values of diffusion coefficient. Probe measurements on poly(vinyl chloride) (PVC) gels carried out using FRS are described and results are presented for the diffusion of methyl red in PVC gels and sols formed at varying concentrations in bis(2-ethylhexyl) phthalate.
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© 1991 Elsevier Science Publishers Ltd
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Griffin, W.G., Griffin, M.C.A. (1991). Self-Diffusion of Probe Molecules in PVC Gels. In: Lemstra, P.J., Kleintjens, L.A. (eds) Integration of Fundamental Polymer Science and Technology—5. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3890-1_36
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DOI: https://doi.org/10.1007/978-94-011-3890-1_36
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-85166-587-7
Online ISBN: 978-94-011-3890-1
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