Cargando…
Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis
Fiber-reinforced composites are among the most investigated and industrially applied materials. Many studies on these composites using fibers, especially with natural fibers, were made in response to an urgent action for ambient preservation. A particularly relevant situation exists nowadays in the...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459994/ https://www.ncbi.nlm.nih.gov/pubmed/36080724 http://dx.doi.org/10.3390/polym14173650 |
_version_ | 1784786641923080192 |
---|---|
author | Oliveira, Michelle Souza da Luz, Fernanda Santos Pereira, Artur Camposo Costa, Ulisses Oliveira Bezerra, Wendell Bruno Almeida da Cunha, Juliana dos Santos Carneiro Lopera, Henry Alonso Colorado Monteiro, Sergio Neves |
author_facet | Oliveira, Michelle Souza da Luz, Fernanda Santos Pereira, Artur Camposo Costa, Ulisses Oliveira Bezerra, Wendell Bruno Almeida da Cunha, Juliana dos Santos Carneiro Lopera, Henry Alonso Colorado Monteiro, Sergio Neves |
author_sort | Oliveira, Michelle Souza |
collection | PubMed |
description | Fiber-reinforced composites are among the most investigated and industrially applied materials. Many studies on these composites using fibers, especially with natural fibers, were made in response to an urgent action for ambient preservation. A particularly relevant situation exists nowadays in the area of materials durability. In this respect, no studies on water-immersion-accelerated aging in fique fiber–epoxy composites are reported. This work aimed to fill this gap by investigating the epoxy matrix composites reinforced with 40 vol% fique fabric. The epoxy matrix and the composite, both unaged and aged, were characterized by weight variation, water absorption, morphology, colorimetry (CIELAB method), Fourier transform infrared spectroscopy (FTIR) and dynamic–mechanical analysis (DMA). The main results were that degradation by water presents appearance of complex microfibril structures, plasticization of epoxy resin, and debonding of the fique fiber/epoxy matrix. The most intense color change was obtained for the water-immersion-aged epoxy by 1440 h. Cole–Cole diagrams revealed the heterogeneity of the materials studied. |
format | Online Article Text |
id | pubmed-9459994 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94599942022-09-10 Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis Oliveira, Michelle Souza da Luz, Fernanda Santos Pereira, Artur Camposo Costa, Ulisses Oliveira Bezerra, Wendell Bruno Almeida da Cunha, Juliana dos Santos Carneiro Lopera, Henry Alonso Colorado Monteiro, Sergio Neves Polymers (Basel) Article Fiber-reinforced composites are among the most investigated and industrially applied materials. Many studies on these composites using fibers, especially with natural fibers, were made in response to an urgent action for ambient preservation. A particularly relevant situation exists nowadays in the area of materials durability. In this respect, no studies on water-immersion-accelerated aging in fique fiber–epoxy composites are reported. This work aimed to fill this gap by investigating the epoxy matrix composites reinforced with 40 vol% fique fabric. The epoxy matrix and the composite, both unaged and aged, were characterized by weight variation, water absorption, morphology, colorimetry (CIELAB method), Fourier transform infrared spectroscopy (FTIR) and dynamic–mechanical analysis (DMA). The main results were that degradation by water presents appearance of complex microfibril structures, plasticization of epoxy resin, and debonding of the fique fiber/epoxy matrix. The most intense color change was obtained for the water-immersion-aged epoxy by 1440 h. Cole–Cole diagrams revealed the heterogeneity of the materials studied. MDPI 2022-09-02 /pmc/articles/PMC9459994/ /pubmed/36080724 http://dx.doi.org/10.3390/polym14173650 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Oliveira, Michelle Souza da Luz, Fernanda Santos Pereira, Artur Camposo Costa, Ulisses Oliveira Bezerra, Wendell Bruno Almeida da Cunha, Juliana dos Santos Carneiro Lopera, Henry Alonso Colorado Monteiro, Sergio Neves Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis |
title | Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis |
title_full | Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis |
title_fullStr | Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis |
title_full_unstemmed | Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis |
title_short | Water Immersion Aging of Epoxy Resin and Fique Fabric Composites: Dynamic–Mechanical and Morphological Analysis |
title_sort | water immersion aging of epoxy resin and fique fabric composites: dynamic–mechanical and morphological analysis |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459994/ https://www.ncbi.nlm.nih.gov/pubmed/36080724 http://dx.doi.org/10.3390/polym14173650 |
work_keys_str_mv | AT oliveiramichellesouza waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT daluzfernandasantos waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT pereiraarturcamposo waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT costaulissesoliveira waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT bezerrawendellbrunoalmeida waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT dacunhajulianadossantoscarneiro waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT loperahenryalonsocolorado waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis AT monteirosergioneves waterimmersionagingofepoxyresinandfiquefabriccompositesdynamicmechanicalandmorphologicalanalysis |