Produção de filmes de triacetato de celulose a partir da celulose extraída de fonte lignocelulósica alternativa

Abstract

Films of regenerated cellulose and their acetylated and esterified derivatives are widely applied in different industrial areas, food area, agriculture, health, pharmacy among others. Esterified films as cellulose acetates present good processability and properties of barrier. In this job, the cellulose triacetate (TAC) is prepared through acetylation of cellulose of the seed of mango that presented high purity that enables the preparation of this derivative. Films of TAC or produced symmetrically (FS) (films with thin and dense thickness) and asymmetric (FSA) (maintain structure of pores on the surface not inside). It was evaluated the flow of water and the degree of swelling by swelling, it was verified that the structural form could be controlled for the production of films, where it was possible films with different morphologies and formats. The results show that films can be used in processes of separation and application as protective films, a desirable aspect of a protective layer for seed protection, an important aspect of this process. It has been found that the FSA film is the best for this purpose.