Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends

This study investigated the effect of dynamic crosslinking of polyamide 6,12 and random copolymers of ethylene and vinyl acetate blends (PA6,12/EVA) on the morphology, crystallinity, and dynamic mechanical properties. The crosslinking agent was dicumyl peroxide (DCP), and the blends were processed...

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Autores principales: Bondan, Fabricio, Ernzen, Juliano, Amalvy, Javier, Machado, Ana, De Nardi Martins, Johnny, Bianchi, Otavio
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2019
Materias:
elastomers; polyamides; structure-property relations; synthesis and processing; thermoplastics
Acceso en línea:http://hdl.handle.net/20.500.12272/3425
Aporte de:
RIA - Repositorio Institucional Abierto (UTN) de Universidad Tecnológica Nacional
id I68-R174-20.500.12272-3425
record_format dspace
institution Universidad Tecnológica Nacional
institution_str I-68
repository_str R-174
collection RIA - Repositorio Institucional Abierto (UTN)
language Inglés
topic elastomers; polyamides; structure-property relations; synthesis and processing; thermoplastics
spellingShingle elastomers; polyamides; structure-property relations; synthesis and processing; thermoplastics
Bondan, Fabricio
Ernzen, Juliano
Amalvy, Javier
Machado, Ana
De Nardi Martins, Johnny
Bianchi, Otavio
Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
topic_facet elastomers; polyamides; structure-property relations; synthesis and processing; thermoplastics
description This study investigated the effect of dynamic crosslinking of polyamide 6,12 and random copolymers of ethylene and vinyl acetate blends (PA6,12/EVA) on the morphology, crystallinity, and dynamic mechanical properties. The crosslinking agent was dicumyl peroxide (DCP), and the blends were processed in a torque rheometer. The morphology depended on the DCP content, and all blends exhibited the same crystallinity index. However, with increasing crosslinking degree, the interfacial tackiness (E) values increased from 1.8 to 2.7 nm. The lamellar structures of all blends started forming at approximately 160 8C, close to the temperature of pure polyamide. The crosslinked phase enhanced the pseudo-elastic behavior of the blends and increased their molecular mobility activation energy. Samples with higher crosslinking degree exhibited smaller permanent deformation (0.01%) than those with low crosslinking.
format Artículo
publishedVersion
Artículo
author Bondan, Fabricio
Ernzen, Juliano
Amalvy, Javier
Machado, Ana
De Nardi Martins, Johnny
Bianchi, Otavio
author_facet Bondan, Fabricio
Ernzen, Juliano
Amalvy, Javier
Machado, Ana
De Nardi Martins, Johnny
Bianchi, Otavio
author_sort Bondan, Fabricio
title Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
title_short Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
title_full Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
title_fullStr Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
title_full_unstemmed Influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of PA6,12 EVA blends
title_sort influence of dynamic crosslinking on the morphology, crystallization, and dynamic mechanical properties of pa6,12 eva blends
publishDate 2019
url http://hdl.handle.net/20.500.12272/3425
work_keys_str_mv AT bondanfabricio influenceofdynamiccrosslinkingonthemorphologycrystallizationanddynamicmechanicalpropertiesofpa612evablends
AT ernzenjuliano influenceofdynamiccrosslinkingonthemorphologycrystallizationanddynamicmechanicalpropertiesofpa612evablends
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