Avaliação de membranas utilizadas em tratamento de queimaduras

Abstract

The search of new materials, which can be applied to treatment of injured human tissues, has lead to development of new dressings. Membranes have potential as dressing because they can be fitted to tissue surface and also may interact with them. The main objective of this study was analyze the morphological as well as wettability of commercial membranes used in treatement of burned people and also perform a comparison with latex membranes prepared in the laboratories of Programa de Pós-graduação em Ciência de Materiais da UFMT/Barra do Garças. For that, it was performed a analysis of surface morphology by using atomic force atomic microscopy and wetting contact angle measurements. These latter one showed that only one examined membrane was found be hydrophobic, which is a expected result because it is a hydrocolloid dressing. In addition, this study also evaluated the effectiveness of the incorporation of the photosensitizer methylene blue dye in latex membrane with potential for use as membranes with curative application in photodynamic therapy. It was observed that the deposition of the photosensitizer into latex membranes is responsible for increasing the roughness and wettability as well as conservation of fractality. The values c and DF found for AM latex membrane are similar to those determined for the commercial membrane MEMBRACEL. These analyzes made it possible to correlate quantitative information such as roughness and fractal dimension with the wettability of the membranes.