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Sorption/desorption and diffusion kinetics of ketones and nitriles into fluoropolymer membranes
Author(s) -
Aminabhavi Tejraj M.,
Harlapur Sujata F.
Publication year - 1997
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/(sici)1097-4628(19970725)65:4<635::aid-app2>3.0.co;2-l
Subject(s) - sorption , desorption , fluoropolymer , diffusion , membrane , carbon black , kinetics , polymer chemistry , chemical engineering , chemistry , carbon fibers , materials science , thermodynamics , organic chemistry , adsorption , composite material , polymer , physics , biochemistry , natural rubber , quantum mechanics , engineering , composite number
Analysis of sorption/desorption and diffusion kinetics of ketones and nitriles at 25, 44, and 60°C into three Du Pont's VITON fluoropolymer membranes loaded with different amounts of carbon black has been undertaken by use of a sorption/desorption technique. The transport results are affected by the percent loading of carbon blacks. Diffusion coefficients have been calculated from Fick's equation. These results show a decrease with increasing amount of carbon black. Experimental results have been analyzed by considering swelling of the membranes. Sorption/desorption results have been analyzed from a calculation of the concentration profiles, which are obtained from the analytical solution of Fick's equation. These results have been compared with a numerical solution based on the finite difference method. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65: 635–647, 1997