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dc.creatorSoares, Alexandre Roberto
dc.creatorPontón, Patricia I.
dc.creatorMančić, Lidija
dc.creatorD'Almeida, Jose Roberto
dc.creatorRomao, Carl P.
dc.creatorWhite, Mary Ann
dc.creatorMarinković, Bojan
dc.date.accessioned2017-06-10T15:45:07Z
dc.date.issued2014
dc.identifier.issn0022-2461 (Print)
dc.identifier.issn1573-4803 (Online)
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/567
dc.description.abstractRecently, polymer composites reinforced with low fractions of thermomiotic nanoceramics have triggered a lot of research. The efforts have been focused on achieving considerable reduction of the coefficient of thermal expansion (CTE) of polymeric materials without deterioration of other physical properties. In this context, polyethylene (PE) composites reinforced with different loads of Al2Mo3O12 nanofillers (0.5–4 mass %) were fabricated by micro-compounding. To enhance the interfacial interaction between the two components, chemical functionalization of Al2Mo3O12 was performed with vinyltrimethoxysilane (VTMS) prior to micro-compounding. Infrared spectroscopy and thermogravimetry demonstrated the successful grafting of VTMS on the Al2Mo3O12 surface. The composites showed strongly decreased CTEs, up to 46 % reduction for loadings of 4 mass % compared with neat PE, suggesting intimate filler–matrix interactions. The variation of CTEs of the composites in terms of the filler fraction was successfully described by Turner’s model allowing calculation of the bulk modulus of monoclinic Al2Mo3O12 (13.6 ± 2.6 GPa), in agreement with the value obtained by an ultrasonic method. The thermal stability of the composites was improved, although the addition of functionalized fillers decreased the degree of crystallinity of the PE to a small extent. The Young’s modulus and yield strength of the composites increased from 6.6 to 19.1 % and 4.0–6.0 %, respectively, supporting the existence of strong filler–matrix interactions, contributing to an efficient load transfer. Finite element analysis of thermal stresses indicated absence of plastic deformation of the matrix or fracture of the nanofillers, for a 100 K temperature drop.en
dc.format
dc.formatapplication/pdf
dc.languageen
dc.relationCNPq (National Council for Scientific and Technological Development), Research Productivity Grants
dc.relationNSERC - Discovery Grants program
dc.rightsopenAccess
dc.sourceJournal of Materials Science
dc.subjectAl2Mo3O12
dc.subjectpolyethylene
dc.subjectpolymer composites
dc.subjectthermomiotic nanoceramics
dc.titleAl2Mo3O12/polyethylene composites with reduced coefficient of thermal expansionen
dc.typearticle
dc.rights.licenseBY-NC-ND
dcterms.abstractд'Aлмеида, Јосé Р. М.; Соарес, Aлеxандре Роберто; Понтóн, Патрициа; Манчић, Лидија; Ромао, Царл П.; Wхите, Марy Aнн; Маринковић, Бојан;
dc.citation.spage7870
dc.citation.epage7882
dc.citation.volume49
dc.citation.issue22
dc.identifier.wos000341419900026
dc.identifier.doi10.1007/s10853-014-8498-3
dc.identifier.scopus2-s2.0-84906950830
dc.description.otherThis is the peer-reviewed version of the paper Soares, A.R., Pontón, P.I., Mancic, L., d’Almeida, J.R.M., Romao, C.P., White, M.A., Marinkovic, B.A., 2014. Al2Mo3O12/polyethylene composites with reduced coefficient of thermal expansion. Journal of Materials Science 49, 7870–7882. [https://doi.org/10.1007/s10853-014-8498-3]
dc.type.versionacceptedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/id/5454/Revised_version_JMS2014-1.pdf


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