Open AccessApplications of Non-Linear Diffusion Equations to the Kinetics of Water Vapour Adsorption by Polymeric Fibres
Author(s) -
Б. М. Кац,
В. В. Кутаров,
A. A. Chagodar
Publication year - 1992
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749200900405
Subject(s) - adsorption , diffusion , chemistry , kinetics , thermodynamics , sorbent , water vapor , exponential function , effective diffusion coefficient , organic chemistry , medicine , mathematical analysis , physics , mathematics , quantum mechanics , radiology , magnetic resonance imaging
In order to describe the kinetics of water vapour adsorption by polymeric fibres, a numeric experiment has been carried out using the framework of a non-linear diffusion model which takes into account the exponential dependence of the diffusion coefficient on the sorbate concentration in the sorbent. The results show a good correlation between theoretical and experimental kinetic curves for polymolecular adsorption. They also confirm the exponential decrease of the diffusion coefficient with an increase in polymolecular filling.