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Materials 2015, 8(1), 137-148; doi:10.3390/ma8010137

Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid)

1
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, Mexico
2
Departamento de Ingeniería Ambiental Industrial, Universidad Estatal de Sonora, C.P. 83100 Hermosillo, Sonora, México
3
Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, Mexico
4
Unidad de Materiales, centro de Investigación Científica de Yucatán, C.P. 97200 Mérida, Yucatán, Mexico
*
Author to whom correspondence should be addressed.
Academic Editor: Naozumi Teramoto
Received: 9 October 2014 / Accepted: 19 December 2014 / Published: 30 December 2014
View Full-Text   |   Download PDF [681 KB, uploaded 30 December 2014]   |  

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. View Full-Text
Keywords: polyethylene; chitosan; poly(lactic acid); maleic anhydride; extrusion polyethylene; chitosan; poly(lactic acid); maleic anhydride; extrusion
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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.

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