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Photodielectric properties of polymers and polymer composites

dc.contributor.advisorDudić, Duško
dc.contributor.otherCerović, Dragana
dc.contributor.otherDojčilović, Jablan
dc.contributor.otherPopović, Dušan
dc.creatorŠkipina, Blanka
dc.date.accessioned2019-12-24T16:08:18Z
dc.date.available2019-12-24T16:08:18Z
dc.date.available2020-07-03T09:51:23Z
dc.date.issued2018-12-12
dc.identifier.urihttp://nardus.mpn.gov.rs/handle/123456789/11660
dc.identifier.urihttp://eteze.bg.ac.rs/application/showtheses?thesesId=7003
dc.identifier.urihttps://fedorabg.bg.ac.rs/fedora/get/o:20538/bdef:Content/download
dc.identifier.urihttp://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=51491855
dc.description.abstractPredmet istraživanja u disertaciji su fotodielektrične osobine polimera i polimernih kompozita. U okviru disertacije prezentovane su dvije modifikovane metode dielektrične spektroskopije za određivanje površinskih i zapreminskih dielektričnih parametara polimernih kompozita. Dizajnirana je mjerna ćelija za fotodielektrična mjerenja u opsegu relativnih vlažnosti od 9% do 100%, kao i mjerna ćelija za zapreminska beskontaktna dielektrična mjerenja sa transparentnom gornjom elektrodom (staklo obloženo sa ITO). Proučavani su efekti UV-Vis zračenja, temperature, relativne vlažnosti i primjesa na dielektrične osobine polimernih materijala, kao i primjena ovih materijala u novom patentiranom tipu fotoćelije (P-2015/0529). Ispitivano je više tipova polimernih matrica: nepolarne (LDPE, iPP), polarne (PEO, PC, PBT, PVDF, PMMA) i biopolimerne matrice; kompozitni uzorci su pravljeni sa različitim fotoaktivnim puniocima (Ag, Alq3, CNT, ugljenik, ZnO, TiO2, BaTiO3, Fe3O4, Y3(Al, Ga)5O12, emodin, ferocen, fenilfosfonska kiselina) kako bi se prepoznali kompoziti sa najpodesnijim osobinama za dizajniranje nove generacije jeftinijih i efikasnijih jednoslojnih fotoćelija. U eksperimentima su korišćene živine UV lampe talasnih dužina 256 nm i 365 nm, čija je snaga zračenja 1 Wm-2 i LED lampe talasnih dužina: 620 nm; 520 nm; 440 nm i 395 nm i snage zračenja 17 Wm-2, kao i LED lampe koje daju bijelu svjetlost...sr
dc.description.abstractThe subject of research in this dissertation is photoelectric properties of polymers and polymer composites. Within the dissertation, two modified methods of dielectric spectroscopy were presented for the determination of surface and volume dielectric parameters of polymer composites. The measuring cell is designed for photodielectric measurements in relative humidity range from 9% to 100%, as well as a measuring cell for volumetric non-contact dielectric measurements with transparent top electrode (ITO coated glass). The influences of UV-Vis radiation, temperature, relative humidity and fillers on the dielectric properties of polymer materials have been researched, as well as the application of these materials in the new patented photocell type (P-2015/0529). Several types of polymer matrices were tested: nonpolar (LDPE, iPP), polar (PEO, PC, PBT, PVDF, PMMA) and biopolymer matrices; composite samples were made with various photoactive fillers (Ag, Alq3, CNT, Carbon, ZnO, TiO2, BaTiO3, Fe3O4, Y3 (Al, Ga) 5O12, emodine, ferrocene, phenylphosphonic acid) to find composites with most promising properties for designing a new generation of cheaper and more efficient single-layer photocells. In experiments were used Mercury based UV lamps with 256 nm and 365 nm wavelengths, with a radiation power of 1 Wm-2, and LED wavelengths of 620 nm; 520 nm; 440 nm and 395 nm and radiation power of 17 Wm-2, as well as white LED lamp. The irradiation power was determined using the MINI-KLA PV I-V Curve Analyzer INGENIEURBURO Mencke & Tegtmeyer...en
dc.formatapplication/pdf
dc.languagesr
dc.publisherУниверзитет у Београду, Физички факултетsr
dc.rightsopenAccessen
dc.sourceУниверзитет у Београдуsr
dc.subjectfotodielektrične osobinesr
dc.subjectphotodielectric propertiesen
dc.subjectdielectric spectroscopyen
dc.subjectpolymer compositesen
dc.subjectdielektrična spektroskopijasr
dc.subjectpolimerni kompozitisr
dc.titleFotodielektrične osobine polimera i polimernih kompozitasr
dc.title.alternativePhotodielectric properties of polymers and polymer compositesen
dc.typedoctoralThesis
dc.rights.licenseBY-NC-ND
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/25292/Disertacija.pdf
dc.identifier.fulltexthttp://nardus.mpn.gov.rs/bitstream/id/25293/IzvestajKomisije21223.pdf


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