Study of the mechanical and chemical relationship at the interface of fique fibres/polypropylene composite

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dc.contributor.advisorMeza Meza, Juan Manuel
dc.contributor.authorCuellar Posada, Julio
dc.contributor.cvlacCuellar Posada, Julio [0001709295]
dc.contributor.educationalvalidatorPalacio Betancur, Juliana
dc.contributor.orcidCuellar Posada, Julio [000000023000151X]
dc.contributor.orcidMeza Meza, Juan Manuel [0000000180133775]
dc.contributor.researchgroupDesign of Advanced Compositesdadcomp
dc.date.accessioned2026-02-06T16:26:03Z
dc.date.available2026-02-06T16:26:03Z
dc.date.issued2025-12
dc.descriptionIlustraciones
dc.description.abstractLa transición global hacia materiales sostenibles ha destacado la relevancia de los compuestos basados en fibras naturales como alternativas ecológicas a los materiales derivados del petróleo. Este estudio investiga las interacciones mecánicas y químicas en la interfaz de compuestos de polipropileno (PP) reforzados con fibra de fique. Debido a la incompatibilidad intrínseca entre las fibras lignocelulósicas hidrofílicas y la matriz hidrofóbica de PP, se implementaron estrategias como tratamientos superficiales de la fibra (mercerización y esterificación) y modificación de la matriz mediante polipropileno injertado con anhídrido maleico (MAPP) para mejorar la adhesión interfacial. Se empleó un enfoque experimental integral, que incluyó caracterizaciones micromecánicas (microbond pull-out, ensayos de tracción en fibras individuales), macromecánicas (ensayos de tracción y flexión), físicas (mediciones de ángulo de contacto) y químicas (FTIR, PZC y simulaciones moleculares). Los resultados demuestran una fuerte correlación entre las interacciones químicas en la interfaz fibra/matriz y el desempeño mecánico resultante de los compuestos. Los hallazgos revelaron que un contenido de MAPP del 5 % en peso proporciona una adhesión interfacial óptima y una resistencia mecánica mejorada, contribuyendo al desarrollo de paneles compuestos reciclables y sostenibles, adecuados para aplicaciones industriales como el transporte y la construcción. ( Texto tomado de la fuente)spa
dc.description.abstractThe global transition toward sustainable materials has underscored the relevance of natural fibre-based composites as eco-friendly alternatives to petroleum-derived materials. This study investigates the mechanical and chemical interactions at the interface of fique fibre-reinforced polypropylene (PP) composites. Due to the intrinsic incompatibility between hydrophilic lignocellulosic fibres and the hydrophobic PP matrix, strategies such as fibre surface treatments (mercerization and esterification) and matrix modification using maleic anhydride grafted polypropylene (MAPP) were implemented to improve interfacial adhesion. A comprehensive experimental approach was employed, including micromechanical (microbond pull-out, single fibre tensile tests), macromechanical (tensile and flexural tests), physical (contact angle measurements), and chemical characterizations (FTIR, PZC, and molecular simulations). The findings demonstrate a strong correlation between the chemical interactions at the fibre/matrix interface and the resulting mechanical performance of the composites. Results revealed that a MAPP content of 5 wt.% provides optimal interfacial bonding and mechanical strength, contributing to the development of recyclable, sustainable composite panels suitable for industrial applications such as transportation and construction.eng
dc.description.curricularareaIngeniería Mecánica.Sede Medellín
dc.description.degreelevelMaestría
dc.description.degreenameMagíster en Ingeniería Mecánica
dc.description.notesDistinción meritoriaspa
dc.description.researchareaMateriales Compuestos
dc.description.researchareaMateriales
dc.description.sponsorshipEste trabajo se desarrolló con el apoyo de la convocatoria 890 de Minciencias, bajo el proyecto con código de registro 82508 y nombre "Desarrollo de paneles estructurales amigables con el medio ambiente en materiales compuestos reciclables de matriz polimérica termoplástica reforzado con fibras de fique".
dc.format.extent1 recurso en línea (141 páginas)
dc.format.mimetypeapplication/pdf
dc.identifier.instnameUniversidad Nacional de Colombiaspa
dc.identifier.repoRepositorio Institucional Universidad Nacional de Colombiaspa
dc.identifier.repourlhttps://repositorio.unal.edu.co/spa
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/89406
dc.language.isoeng
dc.publisherUniversidad Nacional de Colombia
dc.publisher.branchUniversidad Nacional de Colombia - Sede Medellín
dc.publisher.facultyFacultad de Minas
dc.publisher.placeMedellín, Colombia
dc.publisher.programMedellín - Minas - Maestría en Ingeniería Mecánica
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dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.rights.licenseAtribución-NoComercial-CompartirIgual 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subject.ddc620 - Ingeniería y operaciones afines::629 - Otras ramas de la ingeniería
dc.subject.lembProductos del petroleo
dc.subject.lembPolipropileno
dc.subject.proposalNatural fibreseng
dc.subject.proposalCompositeseng
dc.subject.proposalMAPPeng
dc.subject.proposalInterfaceeng
dc.subject.proposalPolypropyleneeng
dc.subject.proposalFibras naturalesspa
dc.subject.proposalCompuestosspa
dc.subject.proposalMAPPspa
dc.subject.proposalInterfazspa
dc.subject.proposalPolipropilenospa
dc.titleStudy of the mechanical and chemical relationship at the interface of fique fibres/polypropylene compositeeng
dc.title.translatedEstudio de la relación mecánica y química en la interfaz de un compuesto de fibras de fique/polipropilenospa
dc.typeTrabajo de grado - Maestría
dc.type.coarhttp://purl.org/coar/resource_type/c_bdcc
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.contentText
dc.type.driverinfo:eu-repo/semantics/masterThesis
dc.type.redcolhttp://purl.org/redcol/resource_type/TM
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dcterms.audience.professionaldevelopmentEstudiantes
dcterms.audience.professionaldevelopmentInvestigadores
dcterms.audience.professionaldevelopmentMaestros
dcterms.audience.professionaldevelopmentEspecializada
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2
oaire.awardtitleConvocatoria Minciencias número 890 de 2020: Convocatoria para el fortalecimiento de CTeI en Instituciones de Educación Superior
oaire.fundernameMinisterio de Ciencia, Tecnología e Innovación de Colombia - MINCIENCIAS

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