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Enhancing the interfacial adhesion and mechanical strength of pultruded ECR–glass fiber composites with nanofiller-infused epoxy resin

2025-06-23Journal article Open access
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datacite.subject.fosCiências Naturais::Ciências Físicaspt
datacite.subject.fosEngenharia e Tecnologia::Engenharia Mecânicapt
datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiaispt
dc.contributor.authorChandra, Poorna
dc.contributor.authorVenkatarayappa, Ravikumar
dc.contributor.authorChandrashekar, Savitha D.
dc.contributor.authorRaveendra, Kiran
dc.contributor.authorBhaskararao, Asha P.
dc.contributor.authorBheemappa, Suresha
dc.contributor.authorGoudar, Dayanand M.
dc.contributor.authorKurhatti, Rajashekhar V.
dc.contributor.authorRaju, K.
dc.contributor.authorPinto, Deesy G.
dc.contributor.authorPinto, Deesy
dc.date.accessioned2025-09-11T12:43:18Z
dc.date.available2025-09-11T12:43:18Z
dc.date.issued2025-06-23
dc.description.abstract<jats:p>The effect of the interaction between silica (nS) and hydroxyapatite (nHap) nanomaterials on the characteristics of unidirectional glass-fiber-reinforced epoxy (GF/Ep) composite systems is investigated in this work. The goal of the study is to use these nanofillers to improve the microstructure and mechanical characteristics. Pultrusion was used to produce hybrid nanocomposites while keeping the GF loading at a consistent 75% by weight. The hybrid nanocomposites were made with a total filler loading of 6 wt.%, including nHap, and a nS loading ranging from 2 to 4 wt.%. The mechanical performance of the composite was greatly improved by the use of these nanofillers. Compared to neat GF/Ep, hybrid nanocomposites with 6 wt.% combined fillers exhibited increased hardness (14%), tensile strength (25%), interlaminar shear strength (21.3%), and flexural strength (33%). These improvements are attributed to efficient filler dispersion, enhanced fiber-matrix adhesion, and crack propagation resistance. Incorporating 4 wt.% nS alone improved hardness (6%), tensile strength (9%), tensile modulus (21%), interlaminar shear strength (11.4%), flexural strength (12%), and flexural modulus (14%). FTIR analysis indicated Si-O-Si network formation and increased hydrogen bonding, supporting enhanced interfacial interactions. Ultraviolet reflectance measurements showed increased UV reflectivity with nS, especially in hybrid systems, due to synergistic effects. Impact strength also improved, with a notable 11.6% increase observed in the hybrid nanocomposite. Scanning and transmission electron microscopy confirmed that the nanofillers act as secondary reinforcements within the matrix. These hybrid nanocomposites present a promising material choice for various industries, including marine structural applications and automotive components.</jats:p>eng
dc.identifier.citationChandra, P.; Venkatarayappa, R.; Chandrashekar, S.D.; Raveendra, K.; Bhaskararao, A.P.; Bheemappa, S.; Goudar, D.M.; Kurhatti, R.V.; Raju, K.; Pinto, D.G. Enhancing the Interfacial Adhesion and Mechanical Strength of Pultruded ECR–Glass Fiber Composites with Nanofiller-Infused Epoxy Resin. J. Compos. Sci. 2025, 9, 321. https:// doi.org/10.3390/jcs9070321
dc.identifier.doi10.3390/jcs9070321
dc.identifier.issn2504-477X
dc.identifier.urihttp://hdl.handle.net/10400.13/7375
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relationUIDB/04035/2020
dc.relationUIDP/04035/2020
dc.relation.ispartofJournal of Composites Science
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectGF/Ep composites
dc.subjectNanofillers
dc.subjectFTIR
dc.subjectUV-reflectance
dc.subjectMechanical characteristics
dc.subjectScanning electron microscopy
dc.subjectTransmission electron microscopy
dc.subject.
dc.subjectFaculdade de Ciências Exatas e da Engenharia
dc.titleEnhancing the interfacial adhesion and mechanical strength of pultruded ECR–glass fiber composites with nanofiller-infused epoxy resineng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue7
oaire.citation.titleJournal of Composites Science
oaire.citation.volume9
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNamePinto
person.givenNameDeesy
person.identifier.ciencia-idF014-D3E5-5C2E
person.identifier.orcid0000-0003-2218-1343
person.identifier.ridL-3270-2013
person.identifier.scopus-author-id35362905700
relation.isAuthorOfPublication84394437-adbf-4747-a218-4434e421f905
relation.isAuthorOfPublication.latestForDiscovery84394437-adbf-4747-a218-4434e421f905

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