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Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding

In this work, the suitability for the production of sustainable and lightweight materials with specific mechanical properties and potentially lower costs was studied. Agave fiber (AF), an agro-industrial waste, was used as a reinforcement and azodicarbonamide (ACA) as a chemical blowing agent (CBA)...

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Autores principales: Vázquez Fletes, Roberto Carlos, Cisneros López, Erick Omar, Moscoso Sánchez, Francisco Javier, Mendizábal, Eduardo, González Núñez, Rubén, Rodrigue, Denis, Ortega Gudiño, Pedro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182834/
https://www.ncbi.nlm.nih.gov/pubmed/32106484
http://dx.doi.org/10.3390/polym12030503
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author Vázquez Fletes, Roberto Carlos
Cisneros López, Erick Omar
Moscoso Sánchez, Francisco Javier
Mendizábal, Eduardo
González Núñez, Rubén
Rodrigue, Denis
Ortega Gudiño, Pedro
author_facet Vázquez Fletes, Roberto Carlos
Cisneros López, Erick Omar
Moscoso Sánchez, Francisco Javier
Mendizábal, Eduardo
González Núñez, Rubén
Rodrigue, Denis
Ortega Gudiño, Pedro
author_sort Vázquez Fletes, Roberto Carlos
collection PubMed
description In this work, the suitability for the production of sustainable and lightweight materials with specific mechanical properties and potentially lower costs was studied. Agave fiber (AF), an agro-industrial waste, was used as a reinforcement and azodicarbonamide (ACA) as a chemical blowing agent (CBA) in the production of bilayer materials via rotational molding. The external layer was a composite of linear medium density polyethylene (LMDPE) with different AF contents (0–15 wt %), while the internal layer was foamed LMDPE (using 0–0.75 wt % ACA). The samples were characterized in terms of thermal, morphological and mechanical properties to obtain a complete understanding of the structure-properties relationships. Increases in the thicknesses of the parts (up to 127%) and a bulk density reduction were obtained by using ACA (0.75 wt %) and AF (15 wt %). Further, the addition of AF increased the tensile (23%) and flexural (29%) moduli compared to the neat LMDPE, but when ACA was used, lower values (75% and 56% for the tensile and flexural moduli, respectively) were obtained. Based on these results, a balance between mechanical properties and lightweight can be achieved by selecting the AF and ACA contents, as well as the performance and aesthetics properties of the rotomolded parts.
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spelling pubmed-71828342020-05-01 Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding Vázquez Fletes, Roberto Carlos Cisneros López, Erick Omar Moscoso Sánchez, Francisco Javier Mendizábal, Eduardo González Núñez, Rubén Rodrigue, Denis Ortega Gudiño, Pedro Polymers (Basel) Article In this work, the suitability for the production of sustainable and lightweight materials with specific mechanical properties and potentially lower costs was studied. Agave fiber (AF), an agro-industrial waste, was used as a reinforcement and azodicarbonamide (ACA) as a chemical blowing agent (CBA) in the production of bilayer materials via rotational molding. The external layer was a composite of linear medium density polyethylene (LMDPE) with different AF contents (0–15 wt %), while the internal layer was foamed LMDPE (using 0–0.75 wt % ACA). The samples were characterized in terms of thermal, morphological and mechanical properties to obtain a complete understanding of the structure-properties relationships. Increases in the thicknesses of the parts (up to 127%) and a bulk density reduction were obtained by using ACA (0.75 wt %) and AF (15 wt %). Further, the addition of AF increased the tensile (23%) and flexural (29%) moduli compared to the neat LMDPE, but when ACA was used, lower values (75% and 56% for the tensile and flexural moduli, respectively) were obtained. Based on these results, a balance between mechanical properties and lightweight can be achieved by selecting the AF and ACA contents, as well as the performance and aesthetics properties of the rotomolded parts. MDPI 2020-02-25 /pmc/articles/PMC7182834/ /pubmed/32106484 http://dx.doi.org/10.3390/polym12030503 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Vázquez Fletes, Roberto Carlos
Cisneros López, Erick Omar
Moscoso Sánchez, Francisco Javier
Mendizábal, Eduardo
González Núñez, Rubén
Rodrigue, Denis
Ortega Gudiño, Pedro
Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding
title Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding
title_full Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding
title_fullStr Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding
title_full_unstemmed Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding
title_short Morphological and Mechanical Properties of Bilayers Wood-Plastic Composites and Foams Obtained by Rotational Molding
title_sort morphological and mechanical properties of bilayers wood-plastic composites and foams obtained by rotational molding
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182834/
https://www.ncbi.nlm.nih.gov/pubmed/32106484
http://dx.doi.org/10.3390/polym12030503
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