@article{Pérez_Collazo_Izquierdo_Nóvoa_Merino_1998, title={Water uptake in a water-borne paint: a supported and free film comparison}, volume={34}, url={https://revistademetalurgia.revistas.csic.es/index.php/revistademetalurgia/article/view/723}, DOI={10.3989/revmetalm.1998.v34.iExtra.723}, abstractNote={Paints behave as barriers to protect the metallic substrate against corrosion. In the present work, the water uptake in an acrylic water-borne paint was studied under two different conditions: supported and free film, immersed in a sodium chloride 5 % solution. Using the impedance spectroscopy (<i>IS</i>) technique, a sharp increase in the film capacitance was observed, which is related to the volume fraction of water taken into the film by using the Brasher-Kinsbury equation. The results suggested that there was no big differences between both situations. The calculated <i>apparent diffusion coefficient</i> suggests that the difference between both tested situations is of minor importance.}, number={Extra}, journal={Revista de Metalurgia}, author={Pérez, C. and Collazo, A. and Izquierdo, M. and Nóvoa, X. R. and Merino, P.}, year={1998}, month={May}, pages={122–126} }