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Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified With Poly(lactic Acid)

Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified With Poly(lactic Acid)

Jesús Manuel Quiroz-Castillo, Dora Evelia Rodríguez-Félix, Heriberto Grijalva-Monteverde, Lauren Lucero Lizárraga-Laborín, María Mónica Castillo-Ortega, Teresa Del Castillo-Castro, Francisco Rodríguez-Félix, etc.

Materials (Basel). 2014 Dec 30;8(1):137-148.

PMID: 28787928

Abstract:

The 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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP9006262-B	Polyethylene-graft-maleic anhydride		9006-26-2	Price

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