Avaliação do método de obtenção de scaffolds quitosana/curcumina sobre a estrutura, morfologia e propriedades térmicas

Abstract

Researches have been conducted in order to match material properties to improve the regeneration process. Thereby, scaffolds as controlled drug delivery systems have been studied in order to enhance the obtained structure by providing tissue growth while the region is being treated. Thus, this research aims to develop scaffolds of chitosan, and avaluatinh the insertion of curcumin drug by the methods of , solutions reaction and adsorption, aiming at obtaining a chitosan/curcumin for controlled drug release system. The scaffolds were produced by beads aggregation method, in which the beads were originally obtained from the dropping of chitosan solution and chitosan / curcumin in sodium sulphate solution (5%) and then attached by the gelatin solution (5%). The following characterizations were performed: Fourier Transform Infrared Spectroscopy (FTIR), Optical Microscopy (OM), Scanning Electron Microscopy (SEM) and Differential Scanning Calorimetry (DSC). By FTIR analysis, it was possible to verify the likely interaction of chitosan with curcumin. From the morphological analysis by OM and SEM it was possible to identify the drug inside the structures by both methods. DSC analysis showed the total disappearance of the characteristic melting peak of curcumin, thus indicating that curcumin has been encapsulated in chitosan in the amorphous state, which is likely to cause a slower release of the drug. Thus, it was found that the obtained structures are promising for the study of controlled drug release.