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Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior

Blending of biodegradable polymers in combination with low-price organic fillers has proven to be a suitable approach to produce cost-effective composites in order to address pollution issues and develop products with superior mechanical properties. In the present research work PBAT/PHB/Babassu comp...

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Autores principales: Beber, Vinicius C., de Barros, Silvio, Banea, Mariana D., Brede, Markus, de Carvalho, Laura H., Hoffmann, Ron, Costa, Anna Raffaela M., Bezerra, Elieber B., Silva, Ingridy D. S., Haag, Katharina, Koschek, Katharina, Wellen, Renate M. R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5978197/
https://www.ncbi.nlm.nih.gov/pubmed/29772733
http://dx.doi.org/10.3390/ma11050820
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author Beber, Vinicius C.
de Barros, Silvio
Banea, Mariana D.
Brede, Markus
de Carvalho, Laura H.
Hoffmann, Ron
Costa, Anna Raffaela M.
Bezerra, Elieber B.
Silva, Ingridy D. S.
Haag, Katharina
Koschek, Katharina
Wellen, Renate M. R.
author_facet Beber, Vinicius C.
de Barros, Silvio
Banea, Mariana D.
Brede, Markus
de Carvalho, Laura H.
Hoffmann, Ron
Costa, Anna Raffaela M.
Bezerra, Elieber B.
Silva, Ingridy D. S.
Haag, Katharina
Koschek, Katharina
Wellen, Renate M. R.
author_sort Beber, Vinicius C.
collection PubMed
description Blending of biodegradable polymers in combination with low-price organic fillers has proven to be a suitable approach to produce cost-effective composites in order to address pollution issues and develop products with superior mechanical properties. In the present research work PBAT/PHB/Babassu composites with 25, 50, and 75% of each polymer and 20% of Babassu were produced by melting extrusion. Their thermal, mechanical, and morphological behavior was investigated by differential scanning calorimetry (DSC), tensile testing, and scanning electron microscopy (SEM). Blending PBAT with PHB inhibited the crystallization of both polymers whereas adding Babassu did not significantly change their melting behaviour. Incorporation of Babassu reduced the tensile strength of its respective blends between 4.8 and 32.3%, and elongation at break between 26.0 and 66.3%. PBAT as highly ductile and low crystalline polymer may be seen as a crystallization tool control for PHB as well as a plasticizer to PBAT/PHB blends and PBAT/PHB/Babassu composites. As PBAT content increases: (i) elongation at break increases and (ii) surface fracture becomes more refined indicating the presence of more energy dissipation mechanisms. As PBAT/PHB/Babassu composites are biodegradable, environmental friendly, and cost effective, products based on these compounds have a great potential since their mechanical properties such as ductility, stiffness, and tensile strength are still suitable for several applications even at lower temperatures (−40 °C).
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spelling pubmed-59781972018-05-31 Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior Beber, Vinicius C. de Barros, Silvio Banea, Mariana D. Brede, Markus de Carvalho, Laura H. Hoffmann, Ron Costa, Anna Raffaela M. Bezerra, Elieber B. Silva, Ingridy D. S. Haag, Katharina Koschek, Katharina Wellen, Renate M. R. Materials (Basel) Article Blending of biodegradable polymers in combination with low-price organic fillers has proven to be a suitable approach to produce cost-effective composites in order to address pollution issues and develop products with superior mechanical properties. In the present research work PBAT/PHB/Babassu composites with 25, 50, and 75% of each polymer and 20% of Babassu were produced by melting extrusion. Their thermal, mechanical, and morphological behavior was investigated by differential scanning calorimetry (DSC), tensile testing, and scanning electron microscopy (SEM). Blending PBAT with PHB inhibited the crystallization of both polymers whereas adding Babassu did not significantly change their melting behaviour. Incorporation of Babassu reduced the tensile strength of its respective blends between 4.8 and 32.3%, and elongation at break between 26.0 and 66.3%. PBAT as highly ductile and low crystalline polymer may be seen as a crystallization tool control for PHB as well as a plasticizer to PBAT/PHB blends and PBAT/PHB/Babassu composites. As PBAT content increases: (i) elongation at break increases and (ii) surface fracture becomes more refined indicating the presence of more energy dissipation mechanisms. As PBAT/PHB/Babassu composites are biodegradable, environmental friendly, and cost effective, products based on these compounds have a great potential since their mechanical properties such as ductility, stiffness, and tensile strength are still suitable for several applications even at lower temperatures (−40 °C). MDPI 2018-05-16 /pmc/articles/PMC5978197/ /pubmed/29772733 http://dx.doi.org/10.3390/ma11050820 Text en © 2018 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
Beber, Vinicius C.
de Barros, Silvio
Banea, Mariana D.
Brede, Markus
de Carvalho, Laura H.
Hoffmann, Ron
Costa, Anna Raffaela M.
Bezerra, Elieber B.
Silva, Ingridy D. S.
Haag, Katharina
Koschek, Katharina
Wellen, Renate M. R.
Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior
title Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior
title_full Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior
title_fullStr Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior
title_full_unstemmed Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior
title_short Effect of Babassu Natural Filler on PBAT/PHB Biodegradable Blends: An Investigation of Thermal, Mechanical, and Morphological Behavior
title_sort effect of babassu natural filler on pbat/phb biodegradable blends: an investigation of thermal, mechanical, and morphological behavior
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5978197/
https://www.ncbi.nlm.nih.gov/pubmed/29772733
http://dx.doi.org/10.3390/ma11050820
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