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Temperature dependence of diffusion of a disperse dye in the multiple layers of nylon fabric
Author(s) -
Sasaki Hiroaki,
Honma Yoshio,
Kidoh Hanpei,
Karasawa Mikio
Publication year - 1991
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.1991.070420630
Subject(s) - disperse dye , diffusion , activation energy , arrhenius plot , nylon 6 , materials science , dyeing , thermal diffusivity , arrhenius equation , composite material , polymer chemistry , effective diffusion coefficient , thermodynamics , polymer , nylon 66 , chemical engineering , chemistry , polyamide , engineering , medicine , physics , radiology , magnetic resonance imaging
The apparent diffusion coefficients of a disperse dye in the multiple layers of nylon fabric at 45‐75°C are determined as the dyeing model of the textile assembly. The modified pore model is introduced to explain the diffusion behavior in the multiple fabric. The Arrhenius plot of the diffusion coefficient of dye in the spaces or pores of nylon fabric gave a straight line and the activation energy of diffusion was about 9.4 kcal/mol. The temperature dependence of the dye diffusivity in polymer matrix was quantitatively described by a WLF‐type relation,\documentclass{article}\pagestyle{empty}\begin{document}$$\log a_T = - \frac{{3.55(T - T_s )}}{{26.8 + T - T_s }} $$\end{document} where a T is a shift factor of diffusion and T s is the reference temperature.