| abstract |
Applicable material to obtain biodegradable films for extrusion and blow bags, and method of preparation thereof that focuses on the formulation and processing of bioplastics from reactive starches, reactive polyalcohols and reactive cellulosic derivatives that, by coextrusion-blowing with biodegradable polyesters , may lead to films for biodegradable bags. To do this, they are mixed, in different stages: a) functionalized starch with isocyanate groups in terminal hydroxyls and equally functionalized polyalcoholic chains; b) mixture of polyester and terminal functionalized cellulose derivative; and, finally, c) extruded and blown the previously obtained mixtures. |