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Tracer Diffusion Studies of Anions in Nylon 6. 6 Fibres:The Existence of a Surface Barrier Layer
Author(s) -
Coates Jacqueline A.,
Ellard Vivien,
Rattee Ian D.
Publication year - 1980
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1980.tb03494.x
Subject(s) - diffusion , tracer , hydrochloric acid , chemistry , diffusion barrier , barrier layer , layer (electronics) , diffusion layer , surface layer , analytical chemistry (journal) , chemical physics , chromatography , thermodynamics , inorganic chemistry , organic chemistry , physics , nuclear physics
The tracer diffusion of Clr–36 labelled hydrochloric acid and of S–35 labelled C. I. Food Yellow 3 in nylon 6. 6 filaments has been studied. The results have shown that the spun filaments have a surface layer which acts as a barrier to diffusion. Using an analysis, similar to that used by Medley and Andrews [1], the diffusional characteristics of the surface and bulk of the fibres have been determined as a function of draw ratio. Parallel studies, using conventional methods, failed to show the existence of the surface barrier owing to concentration dependence, and diffusion potential effects.