Extruded films of blended chitosan, low density polyethylene and ethylene acrylic acid

A. P. Martínez-Camacho; M. O. Cortez-Rocha; A. Z. Graciano-Verdugo; F. Rodríguez-Félix; M. M. Castillo-Ortega; A. Burgos-Hernández; J. M. Ezquerra-Brauer; M. Plascencia-Jatomea

doi:10.1016/j.carbpol.2012.08.076

Extruded films of blended chitosan, low density polyethylene and ethylene acrylic acid

A. P. Martínez-Camacho, M. O. Cortez-Rocha, A. Z. Graciano-Verdugo, F. Rodríguez-Félix, M. M. Castillo-Ortega, A. Burgos-Hernández, J. M. Ezquerra-Brauer, M. Plascencia-Jatomea^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

73 Scopus citations

Abstract

The obtaining of chitosan extruded films was possible by using low density polyethylene (LDPE) as a matrix polymer and ethylene-acrylic acid copolymer as an adhesive, in order to ensure adhesion in the interphase of the immiscible polymers. The obtained blend films were resistant; however, a reduction in the mechanical resistance was observed as chitosan concentration increased. The thermal stability of the films showed a certain grade of interaction between polymers as seen in FTIR spectra. The antifungal activity of the extruded films was assessed against Aspergillus niger and high inhibition percentages were observed, which may be mainly attributed to barrier properties of the extruded films and the limited oxygen availability, resulting in the inability of the fungi to grow. A low adherence of fungal spores to the material surface was observed, mainly in areas with chitosan clumps, which can serve as starting points for material degradation.

Original language	English
Pages (from-to)	666-674
Number of pages	9
Journal	Carbohydrate Polymers
Volume	91
Issue number	2
DOIs	https://doi.org/10.1016/j.carbpol.2012.08.076
State	Published - 16 Jan 2013

Bibliographical note

Funding Information:
Financial support of the CONACyT (Project No. 53493) is gratefully acknowledged. Authors acknowledge Ing. Silvia Beatriz Andrade Canto from CICY, Yucatán, México, for her assistance in the SEM analysis of chitosan's films.

Keywords

Antifungal activity
Chitosan films
Ethylene acrylic acid copolymer
Extrusion
Low density polyethylene (LDPE)

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10.1016/j.carbpol.2012.08.076

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Martínez-Camacho, A. P., Cortez-Rocha, M. O., Graciano-Verdugo, A. Z., Rodríguez-Félix, F., Castillo-Ortega, M. M., Burgos-Hernández, A., Ezquerra-Brauer, J. M., & Plascencia-Jatomea, M. (2013). Extruded films of blended chitosan, low density polyethylene and ethylene acrylic acid. Carbohydrate Polymers, 91(2), 666-674. https://doi.org/10.1016/j.carbpol.2012.08.076

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AU - Burgos-Hernández, A.

AU - Ezquerra-Brauer, J. M.

AU - Plascencia-Jatomea, M.

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JF - Carbohydrate Polymers

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Extruded films of blended chitosan, low density polyethylene and ethylene acrylic acid

Abstract

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Keywords

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