Tracer Diffusion of Chloride Ions in Nylon 6 Film

Tracer diffusion coefficients of chloride ions in nylon 6 film have been determined by standard techniques combined with liquid scintillation counting. The tracer diffusion coefficients depend markedly on the amount of chloride ion sorbed by the nylon. The observed diffusional flux is a function of two diffusional interaction coefficients relating to the interaction of the diffusing ion with ‘unoccupied’ charge centres in the polymer and with the absorbed water. The interplay of these two interactions may be important in connection with the problem of dyeing barre nylon.