Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid)
AbstractThe use of mixtures of synthetic and natural polymers is a potential option to reduce the pollution by plastic waste. In this work, the method for the chemical modification of chitosan with poly(lactic acid) was developed; then, the preparation of films of blends of polyethylene and chitosan-poly(lactic acid) produced by an extrusion method using polyethylene-graft maleic anhydride as a compatibilizer. It was possible to obtain films with a maximum content of 20 wt% and 30 wt%, chitosan, with and without compatibilizer, respectively. Scanning electron microscope (SEM) analysis showed a homogeneous surface on all films. The addition of the compatibilizer had a significant effect on the mechanical properties of the films, such as an increase in Young’s modulus and a decrease in the elongation at break; additionally, the compatibilizer promotes thermal degradation in a single step and gives the film a slight increase in thermal resistance. These results are attributed to an improved interaction in the interface of polyethylene and chitosan-poly(lactic acid), promoted by the compatibilizer. View Full-Text
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Quiroz-Castillo, J.M.; Rodríguez-Félix, D.E.; Grijalva-Monteverde, H.; Lizárraga-Laborín, L.L.; Castillo-Ortega, M.M.; del Castillo-Castro, T.; Rodríguez-Félix, F.; Herrera-Franco, P.J. Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid). Materials 2015, 8, 137-148.
Quiroz-Castillo JM, Rodríguez-Félix DE, Grijalva-Monteverde H, Lizárraga-Laborín LL, Castillo-Ortega MM, del Castillo-Castro T, Rodríguez-Félix F, Herrera-Franco PJ. Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid). Materials. 2015; 8(1):137-148.Chicago/Turabian Style
Quiroz-Castillo, Jesús M.; Rodríguez-Félix, Dora E.; Grijalva-Monteverde, Heriberto; Lizárraga-Laborín, Lauren L.; Castillo-Ortega, María M.; del Castillo-Castro, Teresa; Rodríguez-Félix, Francisco; Herrera-Franco, Pedro J. 2015. "Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid)." Materials 8, no. 1: 137-148.