Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites

Abstract: The aim of this paper was to investigate the effects of wood flour on the mechanical, morphological and thermal properties of poly (L-lactic acid) (PLA)-chitosan biopolymer composites produced by compression molding. The composites were characterized by a combination of mechanical properti...

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Autores principales:	Altuntas,Ertugrul, Aydemir,Deniz
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2019
Materias:	Bio-based composites DSC analysis mechanical properties Pinus sylvestris TGA analysis wood flour.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000400611
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spelling	oai:scielo:S0718-221X20190004006112019-09-30Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer compositesAltuntas,ErtugrulAydemir,Deniz Bio-based composites DSC analysis mechanical properties Pinus sylvestris TGA analysis wood flour. Abstract: The aim of this paper was to investigate the effects of wood flour on the mechanical, morphological and thermal properties of poly (L-lactic acid) (PLA)-chitosan biopolymer composites produced by compression molding. The composites were characterized by a combination of mechanical properties, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The addition of chitosan to PLA matrix reduced the tensile strength from 57,1 MPa for pure PLA to 34,3 MPa for 5% chitosan and 11,5 MPa for 10% chitosan, and the flexure strength from 72,3 MPa for pure PLLA to 30,4 MPa for 5% chitosan and 24,6 MPa for 10% chitosan. The change trend in the young’s modulus was found to be similar as compare with the tensile strength. However, the flexure modulus generally increased with the addition of the chitosan as comparison with pure PLA. The mechanical properties of the PLA-chitosan blends with wood flour were found to be lower than theirs of the pure PLA. According to SEM images, some holes and small voids at various diameters on the fractured section of the all composites were seen. Tonset, T10%, T50%, T85% of the pure PLA decreased with the addition of both chitosan and wood flour. Thermal stability of the PLA-chitosan blends was determined to be better than the PLA-chitosan composites with wood flour.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.21 n.4 20192019-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000400611en10.4067/S0718-221X2019005000416
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bio-based composites DSC analysis mechanical properties Pinus sylvestris TGA analysis wood flour.
spellingShingle	Bio-based composites DSC analysis mechanical properties Pinus sylvestris TGA analysis wood flour. Altuntas,Ertugrul Aydemir,Deniz Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites
description	Abstract: The aim of this paper was to investigate the effects of wood flour on the mechanical, morphological and thermal properties of poly (L-lactic acid) (PLA)-chitosan biopolymer composites produced by compression molding. The composites were characterized by a combination of mechanical properties, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The addition of chitosan to PLA matrix reduced the tensile strength from 57,1 MPa for pure PLA to 34,3 MPa for 5% chitosan and 11,5 MPa for 10% chitosan, and the flexure strength from 72,3 MPa for pure PLLA to 30,4 MPa for 5% chitosan and 24,6 MPa for 10% chitosan. The change trend in the young’s modulus was found to be similar as compare with the tensile strength. However, the flexure modulus generally increased with the addition of the chitosan as comparison with pure PLA. The mechanical properties of the PLA-chitosan blends with wood flour were found to be lower than theirs of the pure PLA. According to SEM images, some holes and small voids at various diameters on the fractured section of the all composites were seen. Tonset, T10%, T50%, T85% of the pure PLA decreased with the addition of both chitosan and wood flour. Thermal stability of the PLA-chitosan blends was determined to be better than the PLA-chitosan composites with wood flour.
author	Altuntas,Ertugrul Aydemir,Deniz
author_facet	Altuntas,Ertugrul Aydemir,Deniz
author_sort	Altuntas,Ertugrul
title	Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites
title_short	Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites
title_full	Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites
title_fullStr	Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites
title_full_unstemmed	Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites
title_sort	effects of wood flour on the mechanical, thermal and morphological properties of poly (l-lactic acid)-chitosan biopolymer composites
publisher	Universidad del Bío-Bío
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2019000400611
work_keys_str_mv	AT altuntasertugrul effectsofwoodflouronthemechanicalthermalandmorphologicalpropertiesofpolyllacticacidchitosanbiopolymercomposites AT aydemirdeniz effectsofwoodflouronthemechanicalthermalandmorphologicalpropertiesofpolyllacticacidchitosanbiopolymercomposites
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Effects of wood flour on the mechanical, thermal and morphological properties of poly (L-lactic acid)-chitosan biopolymer composites

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