Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites

Abstract: In this work, thermal expansion and morphological properties of recycled polypropylene wood flour composites were evaluated in order to verify the effect caused by the usage of a natural oil as coupling agent. The natural oil used as coupling agent was octanoic acid (C8), maleic anhydride...

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Autor principal:	Poletto,Matheus
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2018
Materias:	Coefficient of thermal expansion flow activation energy melt flow index natural oil octanoic acid.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400563
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spelling	oai:scielo:S0718-221X20180004005632019-02-14Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour compositesPoletto,Matheus Coefficient of thermal expansion flow activation energy melt flow index natural oil octanoic acid. Abstract: In this work, thermal expansion and morphological properties of recycled polypropylene wood flour composites were evaluated in order to verify the effect caused by the usage of a natural oil as coupling agent. The natural oil used as coupling agent was octanoic acid (C8), maleic anhydride grafted polypropylene (MAPP), widely used in industry but from non-renewable source, was also used for comparison. Composites were obtained by twin screw extrusion and injection molded. The results showed that the addition of octanoic acid and maleic anhydride grafted polypropylene reduced the coefficient of thermal expansion of the composites. The dependence of melt viscosity obeyed the Arrhenius-Eyring expression, and the activation energy values for composite viscous flow were higher than matrix. The composite morphology revels that octanoic acid promotes strong interfacial adhesion between filler and matrix, similar to that observed when maleic anhydride grafted polypropylene were used. Octanoic acid showed similar results when compared with maleic anhydride grafted polypropylene in all properties evaluated, indicating that can be used as an alternative instead of use coupling agent from non-renewable sources.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.20 n.4 20182018-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400563en10.4067/S0718-221X2018005004401
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Coefficient of thermal expansion flow activation energy melt flow index natural oil octanoic acid.
spellingShingle	Coefficient of thermal expansion flow activation energy melt flow index natural oil octanoic acid. Poletto,Matheus Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
description	Abstract: In this work, thermal expansion and morphological properties of recycled polypropylene wood flour composites were evaluated in order to verify the effect caused by the usage of a natural oil as coupling agent. The natural oil used as coupling agent was octanoic acid (C8), maleic anhydride grafted polypropylene (MAPP), widely used in industry but from non-renewable source, was also used for comparison. Composites were obtained by twin screw extrusion and injection molded. The results showed that the addition of octanoic acid and maleic anhydride grafted polypropylene reduced the coefficient of thermal expansion of the composites. The dependence of melt viscosity obeyed the Arrhenius-Eyring expression, and the activation energy values for composite viscous flow were higher than matrix. The composite morphology revels that octanoic acid promotes strong interfacial adhesion between filler and matrix, similar to that observed when maleic anhydride grafted polypropylene were used. Octanoic acid showed similar results when compared with maleic anhydride grafted polypropylene in all properties evaluated, indicating that can be used as an alternative instead of use coupling agent from non-renewable sources.
author	Poletto,Matheus
author_facet	Poletto,Matheus
author_sort	Poletto,Matheus
title	Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
title_short	Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
title_full	Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
title_fullStr	Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
title_full_unstemmed	Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
title_sort	influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites
publisher	Universidad del Bío-Bío
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000400563
work_keys_str_mv	AT polettomatheus influenceofcouplingagentsonrheologicalthermalexpansionandmorphologicalpropertiesofrecycledpoypropylenewoodflourcomposites
_version_	1714202660636196864

Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites

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