NMR relaxation and the state of solvent molecules in solutions of polyvinylchloride and polystyrene in dibutylphthalate

An analysis was made of temperature concentration dependences of spin-spin relaxation time and the coefficient of self-diffusion of dibutylphthalate molecules in solutions containing 0-20 vol. % PVC and PS. It was established that, in contrast with the PS solution, PVC solutions contain a small proportion of dibutylphthalate molecules, which are more inhibited, compared with the remaining mass of solvent, and are exchanged with the latter. © 1983