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Journal of Polymers and the Environment

, Volume 27, Issue 1, pp 97–105 | Cite as

Potential Agricultural Mulch Films Based on Native and Phosphorylated Corn Starch With and Without Surface Functionalization with Chitosan

  • Danila MerinoEmail author
  • Tomy J. Gutiérrez
  • Vera A. Alvarez
Original Paper
  • 36 Downloads

Abstract

In order to overcome the problem that represents the use of agricultural polyethylene-mulch films a bio-based and biodegradable alternative based on starch was proposed and evaluated. Starch phosphorylation followed by surface functionalization with chitosan was carried out in films made from corn (Zea mays) starch. The potential agricultural mulch films were manufactured from native and phosphorylated corn starch. The modification of the starch was made by means of two methodologies: wet chemistry by means of aqueous suspension method followed by extrusion and reactive extrusion in a single step. All film systems done were then obtained by thermo-molding. Thermal, barrier, mechanical and morphological characterization was carried out in order to evaluate the potential of these materials as agricultural mulches. The results suggested that the modification made on the starch and surface functionalization were not adequate to achieve the recommended properties for the agricultural usage. Phosphorylated starch films, however, showed adequate barrier and thermal properties, despite that their mechanical behavior still needs to be improved.

Keywords

Crosslinking Plasticulture Reactive extrusion (REx) 

Notes

Acknowledgements

Authors acknowledge the help provided by B.S.Chem. Andres Torres Nicolini during the extrusion process.

Funding

This study was funded by the National Research Council (CONICET), the National University of Mar del Plata (UNMdP) and the National Agency of Scientific and Technological Promotion (ANPCyT), Nro 0008.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Grupo de Materiales Compuestos Termoplásticos (CoMP), Facultad de Ingeniería, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA)Universidad Nacional de Mar del Plata (UNMdP) y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Mar del PlataArgentina

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