Materials | |
Preparation and Characterization of Films Extruded of Polyethylene/Chitosan Modified with Poly(lactic acid) | |
Jesús Manuel Quiroz-Castillo3  Dora Evelia Rodríguez-Félix3  Heriberto Grijalva-Monteverde3  Lauren Lucero Lizárraga-Laborín3  Mar Mónica Castillo-Ortega3  Teresa del Castillo-Castro3  Francisco Rodríguez-Félix1  Pedro Jesús Herrera-Franco2  | |
[1] Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, Mexico; E-Mail:;Unidad de Materiales, centro de Investigación Científica de Yucatán, C.P. 97200 Mérida, Yucatán, Mexico; E-Mail:;Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, C.P. 83000 Hermosillo, Sonora, Mexico; E-Mails: | |
关键词: polyethylene; chitosan; poly(lactic acid); maleic anhydride; extrusion; | |
DOI : 10.3390/ma8010137 | |
来源: mdpi | |
【 摘 要 】
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.
【 授权许可】
CC BY
© 2014 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
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RO202003190017995ZK.pdf | 681KB | download |