Premium
Solubility and diffusivity of sulfur dioxide in latex paint films
Author(s) -
Hendricks B. J.,
Balik C. M.
Publication year - 1990
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.1990.070400528
Subject(s) - solubility , sorption , diffusion , sulfur dioxide , thermal diffusivity , polymer , materials science , chemistry , chemical engineering , polymer chemistry , thermodynamics , organic chemistry , composite material , adsorption , physics , engineering
Sorption of SO 2 in latex paint films is measured as a function of time. This data is used to extract the solubility ( S ) and the diffusion coefficient ( D ) for SO 2 in these films. The solubility of SO 2 in each of the samples follows Henry's law behavior. Sorption occurs only in the polymer, with the inorganic pigment particles acting as impenetrable fillers. The diffusion of SO 2 is Fickin with an exponential dependence upon the concentration of SO 2 . This data is used to calculate the permeabilities of the paint samples to SO 2 , at levels typically found in the atmosphere.