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The influence of polymer and dye characteristics on diffusion in nylon 66
Author(s) -
Chantrey G.,
Rattee I. D.
Publication year - 1974
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1974.070180108
Subject(s) - dyeing , diffusion , polymer , materials science , nylon 6 , disperse dye , nylon 66 , polymer chemistry , fiber , molecule , chemical engineering , chemical physics , composite material , analytical chemistry (journal) , thermodynamics , chemistry , organic chemistry , polyamide , physics , engineering
A study has been carried out of the relationship between polymer orientation and dyeing behavior using a specially prepared range of nylon 66 samples varying only in orientation and five dyes normally showing varying degrees of sensitivity to physical variations in nylon. Integral diffusion coefficients have been calculated using Crank's finite dyebath equation from appropriate rate of dyeing data. Evidence has been produced which suggests that except with dyes of low molecular weight, i.e., dyes insensitive to physical variations in the nylon, a diffusional interaction between diffusing dye molecules exists which leads to a variation in the concentration dependence of the diffusion coefficient with fiber orientation. The length of the diffusing dye ion has been shown to be of decisive importance in this interaction.