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dc.creatorRadoman, Tijana S
dc.creatorDžunuzović, Jasna
dc.creatorJeremić, Katarina B.
dc.creatorGrgur, Branimir N.
dc.creatorMilicevic, Dejan S
dc.creatorPopović, Ivanka G.
dc.creatorDžunuzović, Enis S.
dc.date.accessioned2019-01-30T17:42:01Z
dc.date.available2019-01-30T17:42:01Z
dc.date.issued2014
dc.identifier.issn0261-3069
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1552
dc.description.abstractEpoxy resin/titanium dioxide (epoxy/TiO2) nanocomposites were obtained by incorporation of TiO2 nanoparticles surface modified with gallic acid esters in epoxy resin. TiO2 nanoparticles were obtained by acid catalyzed hydrolysis of titanium isopropoxide and their structural characterization was performed by X-ray diffraction and transmission electron microscopy. Three gallic acid esters, having different hydrophobic part, were used for surface modification of the synthesized TiO2 nanoparticles: propyl, hexyl and lauryl gallate. The gallate chemisorption onto surface of TiO2 nanoparticles was confirmed by Fourier transform infrared and ultraviolet-visible spectroscopy, while the amount of surface-bonded gallates was determined using thermogravimetric analysis. The influence of the surface modified TiO2 nanoparticles, as well as the length of hydrophobic part of the gallate used for surface modification of TiO2 nanoparticles, on glass transition temperature, barrier, dielectric and anticorrosive properties of epoxy resin was investigated by differential scanning calorimetry, water vapor transmission test, dielectric spectroscopy, electrochemical impedance spectroscopy and polarization measurements. Incorporation of surface modified TiO2 nanoparticles in epoxy resin caused increase of glass transition temperature and decrease of the water vapor permeability of epoxy resin. The water vapor transmission rate of epoxy/TiO2 nanocomposites was reduced with increasing hydrophobic part chain length of gallate ligand. Dielectric constant of examined nanocomposites was influenced by gallate used for the modification of TiO2 nanoparticles. The nanocomposites have better anticorrosive properties than pure epoxy resin, because the surface modified TiO2 nanoparticles react as oxygen scavengers, which inhibit steel corrosion by cathodic mechanism.en
dc.publisherElsevier Sci Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172062/RS//
dc.rightsrestrictedAccess
dc.sourceMaterials & Design
dc.subjectEpoxy/TiO2 nanocompositesen
dc.subjectSurface modificationen
dc.subjectGlass transition temperatureen
dc.subjectWater vapor permeabilityen
dc.subjectElectrochemical impedance spectroscopyen
dc.subjectCorrosion currenten
dc.titleImprovement of epoxy resin properties by incorporation of TiO2 nanoparticles surface modified with gallic acid estersen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractГргур, Бранимир Н.; Радоман, Тијана С; Јеремиц, Катарина Б; Дзунузовиц, Енис С; Джунузовић, Јасна; Милицевиц, Дејан С; Поповић, Иванка Г.;
dc.citation.volume62
dc.citation.spage158
dc.citation.epage167
dc.citation.other62: 158-167
dc.citation.rankM21
dc.identifier.doi10.1016/j.matdes.2014.05.015
dc.identifier.rcubConv_3188
dc.identifier.scopus2-s2.0-84901850777
dc.identifier.wos000340047400020
dc.type.versionpublishedVersion


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