Abstract
The concentration-dependences of the coefficients of mutual- and self-diffusion of the low molecular weight component in binary monomer-polymer systems of a series of N-alkylmethacrylates have been studied over the whole range of compositions at different temperatures. The values of the Huggins constant have been determined for the systems studied. The concentration-dependences of the effective activation energies of self-diffusion of the monomers have been obtained. It is shown that in different concentration regions a decisive influence on the value of the self-diffusion coefficient of the monomer is exerted by the geometric dimensions of the molecule of the diffusant, the parameter of its thermodynamic interaction with the polymer and the degree of remoteness of the system from the glass transition point of the polymer.
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