Resumo

RAMIREZ, J.L.; QUINTANA, H.; GALICIA, G.  e  HERNANDEZ, T.. Electrochemical Evaluation of the Chitosan-Gelatin Biopolymer as a Detached Film with a Body Simulated Physiological Solution. Port. Electrochim. Acta [online]. 2020, vol.38, n.1, pp.59-68. ISSN 0872-1904.  https://doi.org/10.4152/pea.202001059.

Biomaterials are being used in implants as metallic supports, to restructure bone and tissue in biomedical applications, and so forth. In this study, the assessment of films from the Chitosan-Gelatin system in detached conditions was carried out, in order to evaluate the effect of the electrolyte over the membrane, to simulate a physiological solution. An equivalent circuit is proposed, so as to interpret the process of biopolymer degradation using electrochemical parameters, as well as a reaction mechanism for the membrane's cathodic areas. The gathered information may be associated with the biodegradability ionic diffusion behavior, also in its application as a temporary coating for metal protection control during the corrosion process of biomaterials, such as magnesium, in bone regeneration.

Palavras-chave : chitosan; detached film; diffusion; electrochemistry; impedance.

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