Abstract
The objective of this paper was to study the behaviour of a collagen membrane when diffusing surfactants through it. The tests were performed using sodium dodecyl sulphate, alkyl dimethyl amine oxides and alkyl dimethyl betaines. Results showed that, when using mixtures of these compounds, the total amount of diffused surfactant has a minimum which corresponds to the range of compositions with a minimum skin irritation potential according to standard irritability values. Fourier transform infrared spectroscopy was applied to evaluate the water content of diffusion collagen membranes. Collagen membranes proved to be useful for studying both the diffusion phenomena of surfactants and their mixtures, and the variation of the water contents.
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