Applicable material for obtaining biodegradable films for bags by extrusion and blowing, and method of preparation of the same. (Machine-translation by Google Translate, not legally binding)

Applicable material to obtain biodegradable films for bags by extrusion and blowing, and method of preparation thereof that focuses on the formulation and processing of bioplastics from reactive starches, reactive polyalcohols and reactive cellulose derivatives that, by co-extrusion-blowing with biodegradable polyesters, can lead to films for biodegradable bags. For this, they are mixed, in different stages: a) starch functionalized with isocyanate groups in terminal hydroxyls and polyalcoholic chains equally functionalized; b) mixture of polyester and terminally functionalized cellulose derivative; and, finally, c) extruding and blowing the previously obtained mixtures. (Machine-translation by Google Translate, not legally binding) Material aplicable para obtener filmes biodegradables para bolsas por extrusión y soplado, y método de preparación del mismo que se centra en la formulación y procesado de bioplásticos a partir de almidones reactivos, polialcoholes reactivos y derivados celulósicos reactivos que, mediante coextrusión-soplado con poliésteres biodegradables, puedan dar lugar a filmes para bolsas biodegradables. Para ello, se mezclan, en diferentes etapas: a) almidón funcionalizado con grupos isocianatos en hidroxilos terminales y cadenas polialcohólicas igualmente funcionalizadas; b) mezcla de poliéster y de derivado de celulosa funcionalizado terminalmente; y, finalmente, c) extrusionado y soplado de las mezclas anteriormente obtenidas.