On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective

Autores
Valle, Vladimir; Aguilar, Alex Darío; Yánez, Paola; Almeida Naranjo, Cristina E.; Cadena, Francisco; Kreiker, Jeronimo Rafael; Raggiotti, Barbara Belen
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Biological agents and their metabolic activity produce significant changes over the microstructure and properties of composites reinforced with natural fibers. In the present investigation, oil palm empty fruit bunch (OPEFB) fiber-reinforced acrylic thermoplastic composites were elaborated at three processing temperatures and subjected to water immersion, Prohesion cycle, and continuous salt-fog aging testing. After exposition, microbiological identification was accomplished in terms of fungal colonization. The characterization was complemented by weight loss, mechanical, infrared, and thermogravimetric analysis, as well as scanning electron microscopy. As a result of aging, fungal colonization was observed exclusively after continuous salt fog treatment, particularly by different species of Aspergillus spp. genus. Furthermore, salt spray promoted filamentous fungi growth producing hydrolyzing enzymes capable of degrading the cell walls of OPEFB fibers. In parallel, these fibers swelled due to humidity, which accelerated fungal growth, increased stress, and caused micro-cracks on the surface of composites. This produced the fragility of the composites, increasing Young’s modulus, and decreasing both elongation at break and toughness. The infrared spectra showed changes in the intensity and appearance of bands associated with functional groups. Thermogravimetric results confirmed fungal action as the main cause of the deterioration.
Fil: Valle, Vladimir. Escuela Politécnica Nacional; Ecuador
Fil: Aguilar, Alex Darío. Escuela Politécnica Nacional; Ecuador
Fil: Yánez, Paola. Universidad de Las Fuerzas Armadas; Ecuador
Fil: Almeida Naranjo, Cristina E.. Escuela Politécnica Nacional; Ecuador. Universidad de Las Américas; Ecuador
Fil: Cadena, Francisco. Escuela Politécnica Nacional; Ecuador
Fil: Kreiker, Jeronimo Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro Experimental de la Vivienda Económica; Argentina
Fil: Raggiotti, Barbara Belen. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Departamento de Ingeniería Civil. Centro de Investigación, Desarrollo y Transferencia de Materiales y Calidad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
AGING
BIODEGRADATION
NATURAL FIBER
POLYMER COMPOSITES
SALT FOG
WATER IMMERSION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/226223
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/226223
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation PerspectiveValle, VladimirAguilar, Alex DaríoYánez, PaolaAlmeida Naranjo, Cristina E.Cadena, FranciscoKreiker, Jeronimo RafaelRaggiotti, Barbara BelenAGINGBIODEGRADATIONNATURAL FIBERPOLYMER COMPOSITESSALT FOGWATER IMMERSIONhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Biological agents and their metabolic activity produce significant changes over the microstructure and properties of composites reinforced with natural fibers. In the present investigation, oil palm empty fruit bunch (OPEFB) fiber-reinforced acrylic thermoplastic composites were elaborated at three processing temperatures and subjected to water immersion, Prohesion cycle, and continuous salt-fog aging testing. After exposition, microbiological identification was accomplished in terms of fungal colonization. The characterization was complemented by weight loss, mechanical, infrared, and thermogravimetric analysis, as well as scanning electron microscopy. As a result of aging, fungal colonization was observed exclusively after continuous salt fog treatment, particularly by different species of Aspergillus spp. genus. Furthermore, salt spray promoted filamentous fungi growth producing hydrolyzing enzymes capable of degrading the cell walls of OPEFB fibers. In parallel, these fibers swelled due to humidity, which accelerated fungal growth, increased stress, and caused micro-cracks on the surface of composites. This produced the fragility of the composites, increasing Young’s modulus, and decreasing both elongation at break and toughness. The infrared spectra showed changes in the intensity and appearance of bands associated with functional groups. Thermogravimetric results confirmed fungal action as the main cause of the deterioration.Fil: Valle, Vladimir. Escuela Politécnica Nacional; EcuadorFil: Aguilar, Alex Darío. Escuela Politécnica Nacional; EcuadorFil: Yánez, Paola. Universidad de Las Fuerzas Armadas; EcuadorFil: Almeida Naranjo, Cristina E.. Escuela Politécnica Nacional; Ecuador. Universidad de Las Américas; EcuadorFil: Cadena, Francisco. Escuela Politécnica Nacional; EcuadorFil: Kreiker, Jeronimo Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro Experimental de la Vivienda Económica; ArgentinaFil: Raggiotti, Barbara Belen. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Departamento de Ingeniería Civil. Centro de Investigación, Desarrollo y Transferencia de Materiales y Calidad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaMultidisciplinary Digital Publishing Institute2023-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/226223Valle, Vladimir; Aguilar, Alex Darío; Yánez, Paola; Almeida Naranjo, Cristina E.; Cadena, Francisco; et al.; On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective; Multidisciplinary Digital Publishing Institute; Polymers; 15; 3; 2-2023; 1-162073-4360CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4360/15/3/704info:eu-repo/semantics/altIdentifier/doi/10.3390/polym15030704info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:12Zoai:ri.conicet.gov.ar:11336/226223instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:00:12.487CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
title On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
spellingShingle On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
Valle, Vladimir
AGING
BIODEGRADATION
NATURAL FIBER
POLYMER COMPOSITES
SALT FOG
WATER IMMERSION
title_short On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
title_full On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
title_fullStr On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
title_full_unstemmed On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
title_sort On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective
dc.creator.none.fl_str_mv Valle, Vladimir
Aguilar, Alex Darío
Yánez, Paola
Almeida Naranjo, Cristina E.
Cadena, Francisco
Kreiker, Jeronimo Rafael
Raggiotti, Barbara Belen
author Valle, Vladimir
author_facet Valle, Vladimir
Aguilar, Alex Darío
Yánez, Paola
Almeida Naranjo, Cristina E.
Cadena, Francisco
Kreiker, Jeronimo Rafael
Raggiotti, Barbara Belen
author_role author
author2 Aguilar, Alex Darío
Yánez, Paola
Almeida Naranjo, Cristina E.
Cadena, Francisco
Kreiker, Jeronimo Rafael
Raggiotti, Barbara Belen
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv AGING
BIODEGRADATION
NATURAL FIBER
POLYMER COMPOSITES
SALT FOG
WATER IMMERSION
topic AGING
BIODEGRADATION
NATURAL FIBER
POLYMER COMPOSITES
SALT FOG
WATER IMMERSION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Biological agents and their metabolic activity produce significant changes over the microstructure and properties of composites reinforced with natural fibers. In the present investigation, oil palm empty fruit bunch (OPEFB) fiber-reinforced acrylic thermoplastic composites were elaborated at three processing temperatures and subjected to water immersion, Prohesion cycle, and continuous salt-fog aging testing. After exposition, microbiological identification was accomplished in terms of fungal colonization. The characterization was complemented by weight loss, mechanical, infrared, and thermogravimetric analysis, as well as scanning electron microscopy. As a result of aging, fungal colonization was observed exclusively after continuous salt fog treatment, particularly by different species of Aspergillus spp. genus. Furthermore, salt spray promoted filamentous fungi growth producing hydrolyzing enzymes capable of degrading the cell walls of OPEFB fibers. In parallel, these fibers swelled due to humidity, which accelerated fungal growth, increased stress, and caused micro-cracks on the surface of composites. This produced the fragility of the composites, increasing Young’s modulus, and decreasing both elongation at break and toughness. The infrared spectra showed changes in the intensity and appearance of bands associated with functional groups. Thermogravimetric results confirmed fungal action as the main cause of the deterioration.
Fil: Valle, Vladimir. Escuela Politécnica Nacional; Ecuador
Fil: Aguilar, Alex Darío. Escuela Politécnica Nacional; Ecuador
Fil: Yánez, Paola. Universidad de Las Fuerzas Armadas; Ecuador
Fil: Almeida Naranjo, Cristina E.. Escuela Politécnica Nacional; Ecuador. Universidad de Las Américas; Ecuador
Fil: Cadena, Francisco. Escuela Politécnica Nacional; Ecuador
Fil: Kreiker, Jeronimo Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro Experimental de la Vivienda Económica; Argentina
Fil: Raggiotti, Barbara Belen. Universidad Tecnológica Nacional. Facultad Regional Córdoba. Departamento de Ingeniería Civil. Centro de Investigación, Desarrollo y Transferencia de Materiales y Calidad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Biological agents and their metabolic activity produce significant changes over the microstructure and properties of composites reinforced with natural fibers. In the present investigation, oil palm empty fruit bunch (OPEFB) fiber-reinforced acrylic thermoplastic composites were elaborated at three processing temperatures and subjected to water immersion, Prohesion cycle, and continuous salt-fog aging testing. After exposition, microbiological identification was accomplished in terms of fungal colonization. The characterization was complemented by weight loss, mechanical, infrared, and thermogravimetric analysis, as well as scanning electron microscopy. As a result of aging, fungal colonization was observed exclusively after continuous salt fog treatment, particularly by different species of Aspergillus spp. genus. Furthermore, salt spray promoted filamentous fungi growth producing hydrolyzing enzymes capable of degrading the cell walls of OPEFB fibers. In parallel, these fibers swelled due to humidity, which accelerated fungal growth, increased stress, and caused micro-cracks on the surface of composites. This produced the fragility of the composites, increasing Young’s modulus, and decreasing both elongation at break and toughness. The infrared spectra showed changes in the intensity and appearance of bands associated with functional groups. Thermogravimetric results confirmed fungal action as the main cause of the deterioration.
publishDate 2023
dc.date.none.fl_str_mv 2023-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/226223
Valle, Vladimir; Aguilar, Alex Darío; Yánez, Paola; Almeida Naranjo, Cristina E.; Cadena, Francisco; et al.; On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective; Multidisciplinary Digital Publishing Institute; Polymers; 15; 3; 2-2023; 1-16
2073-4360
CONICET Digital
CONICET
url http://hdl.handle.net/11336/226223
identifier_str_mv Valle, Vladimir; Aguilar, Alex Darío; Yánez, Paola; Almeida Naranjo, Cristina E.; Cadena, Francisco; et al.; On the Response to Aging of OPEFB/Acrylic Composites: A Fungal Degradation Perspective; Multidisciplinary Digital Publishing Institute; Polymers; 15; 3; 2-2023; 1-16
2073-4360
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4360/15/3/704
info:eu-repo/semantics/altIdentifier/doi/10.3390/polym15030704
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613780161429504
score 13.070432

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