Preparation and Сharacterization of Biocomposite Films of Sodium Alginate/Kappa-Carrageenan/Iota-Carrageenan Loaded with Aminoethoxyvinylglycine

Abstract

This work focused on the development of a new biomaterial from polysaccharides. Thus composite films of sodium alginate, κ-carrageenan, and ι-carra-geenan plasticized with glycerol and poly(ethylene glycol) 400 (PEG 400) were prepared. The surface properties of the resulting films in terms of surface morphology were investigated. The best ratio between glycerol and PEG 400 used as plasticizers to prepare sodium alginate films was determined. Opacity, water content, SEM, TGA, and FTIR studies determined the optimal ratio between glycerol and PEG 400. The addition of carrageenans in the composite films showed differences in the TGA curves and on surface of the films. The composite film was loaded with an ethanolic solution of aminoethoxyvinylglycine (AVG). The AVG loaded in the composite film exhibited improved surface area, increased percent of crystallinity, and higher percent release at a lower temperature and its release kinetics were studied