Mechanism of diffusion of monosubstituted benzoic acids through ethylene-vinyl acetate copolymers.
The present investigation was undertaken to gain insight into the factors governing diffusion of a series of monosubstituted benzoic acids across ethylene-vinyl acetate copolymers. The interactions between ethylene-vinyl acetate and the benzoic acids were studied using diffusion and partition methods. The diffusion coefficients were found to occupy a narrow range, but the permeability and partition coefficients were found to increase in a non-linear fashion as a function of vinyl acetate content. The results were mathematically consistent with the formation of 1:1 benzoic acid:vinyl acetate complexes.
Maurin
M B
MB
Pharmacy R & D, E.I. duPont de Nemours & Company, Inc., Lexington, KY.
Dittert
L W
LW
Hussain
A A
AA
D001565:Benzoates; D002723:Chlorobenzoates; D004058:Diffusion; D010539:Permeability; D011145:Polyvinyls; D013056:Spectrophotometry, Ultraviolet
D001565:Benzoates; D002723:Chlorobenzoates; D011145:Polyvinyls; C016438:ethylenevinylacetate copolymer; C044605:methyl benzoate; C040768:4-chlorobenzoic acid