INTERDIFFUSION IN SOLUTIONS OF POLY(2-ALK YL-5-VINYL TETRAZOLE)S

Interdiffusion in systems involving poly(2-alkyl-5-vinyl tetrazole)s a nd a number of low-molecular-mass solvents, was studied, The concentra tion dependences of diffusion coefficients and activation energies for diffusion were measured in a wide range of solutions compositions, Th e data obtained are interpreted in terms of free volume theory. For va rious temperatures and substituents, the dependences of diffusion coef ficients on composition can be reduced to a unique general curve, plot ting the diffusion coefficient versus the difference between current t emperature and glass transition temperature of a particular polymer. F or solutions of poly(2-methyl-5-vinyl tetrazole), the dependence of th e diffusion coefficient on the viscosity of a diffusant was studied.