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dc.creatorKljajević, Ljiljana M.
dc.creatorNenadović, Snežana S.
dc.creatorNenadović, Miloš T.
dc.creatorBundaleski, Nenad K.
dc.creatorTodorović, Bratislav Ž.
dc.creatorPavlović, Vladimir B.
dc.creatorRakočević, Zlatko
dc.date.accessioned2018-04-11T10:12:14Z
dc.date.available2018-04-11T10:12:14Z
dc.date.issued2017
dc.identifier.issn0272-8842
dc.identifier.urihttps://dais.sanu.ac.rs/123456789/2374
dc.description.abstractThis article presents the results of the compositional, structural and morphological study of geopolymers synthesized from metakaolin and an alkali activator. The study involved the investigation of the structural and chemical properties of the geopolymer, in addition to thermally treated geopolymers up to 600 and 900 °C. The precursor of the geopolymer, and the geopolymer samples before and after the thermal treatment, were investigated by Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and SEM analysis. The corrected average value of the ratio of silicon and aluminum in the geopolymer samples (SiGP:Al) is about 1.46, which suggests that the obtained geopolymer samples represent a mixture of roughly equal amounts of sialate and sialate-siloxo units. Annealing the geopolymer samples at 600 °C decreases the amount of Si-ONa bonds and induces the cross-linking of polymer changes. At the same time, other sodium containing alumino-silicate phases are created. The thermal treatment at 900 °C leads to a considerable reduction of oxygen and particularly sodium, followed by significant morphological changes i.e. formation of a complex porous structure. Additionally, a new semicrystaline phase appears. Both XRD and XPS results imply that this new phase may be nepheline and it is plausible that this phase begins to nucleate at temperatures below 900 °C.en
dc.format43 9 (2017) 6700-6708
dc.languageen
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45012/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45005/RS//
dc.relationCOST Action CM1302 - European Network on Smart Inorganic Polymers (SIPs)
dc.rightsrestrictedAccess
dc.sourceCeramics Internationalen
dc.subjectMixing
dc.subjectSurfaces
dc.subjectChemical properties
dc.subjectClay
dc.subjectStructural applications
dc.titleStructural and chemical properties of thermally treated geopolymer samplesen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractТодоровић, Братислав Ж.; Кљајевић, Љиљана М.; Ненадовић, Снежана С.; Павловић, Владимир Б.; Ракочевић, Златко Љ.; Ненадовић, Милош Т.; Бундалески, Ненад К.;
dc.citation.spage6700
dc.citation.spage6700
dc.citation.epage6708
dc.citation.epage6708
dc.citation.volume43
dc.citation.volume43
dc.citation.issue9
dc.citation.issue9
dc.identifier.wos000401401800009
dc.identifier.doi10.1016/j.ceramint.2017.02.066
dc.identifier.scopus2-s2.0-85013638085
dc.type.versionpublishedVersion
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_dais_2374


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