prikaz prve stranice dokumenta Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine
Embargo period 2026-01-23
master's thesis
Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine
diplomski rad
2024. urn:nbn:hr:167:856358
Stipić, Božana
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Cite this document

Stipić, B. (2024). Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:856358

Stipić, Božana. "Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:167:856358

Stipić, Božana. "Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:167:856358

Stipić, B. (2024). 'Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 27 January 2025, https://urn.nsk.hr/urn:nbn:hr:167:856358

Stipić B. Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2024 [cited 2025 January 27] Available at: https://urn.nsk.hr/urn:nbn:hr:167:856358

B. Stipić, "Inhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:167:856358

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Metadata
TitleInhibicija korozije titanija uporabom ekstrakta propolisa u simuliranim uvjetima usne šupljine : diplomski rad
Title (english)Corrosion inhibition of titanium by propolis in simulated oral cavity conditions : diploma thesis
AuthorBožana Stipić
MentorIvana Smoljko (mentor)
Committee memberSanja Perinović Jozić (predsjednik povjerenstva)
Committee memberMario Nikola Mužek (član povjerenstva)
Committee memberIvana Smoljko (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2024-10-30, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Titanij (Ti) je zbog svoje visoke otpornosti na koroziju, izvanredne biokompatibilnosti, mogućnosti repasivacije i odgovarajućih mehaničkih svojstava postao standardni materijal za izradu dentalnih implantata. Korozijska otpornost ovog materijala povezana je s prisutnošću zaštitnog oksidnog sloja na površini. Međutim, usna šupljina predstavlja složenu sredinu koja može negativno utjecati na korozijsku otpornost, dugotrajnost i integritet titanijskih implantata. Jedna od često primjenjivanih metoda zaštite metala od korozije je zaštita metala inhibitorima korozije. U ovom radu istraživan je utjecaj etanolnog ekstrakta propolisa na korozijsko ponašanje titanija u simuliranim uvjetima usne šupljine pri različitim temperaturama. Istraživanja su provedena elektrokemijskim metodama (metoda mjerenja potencijala otvorenog kruga, metoda linearne polarizacije i potenciodinamička polarizacijska metoda). Nakon slijeda elektrokemijskih mjerenja površinski slojevi Ti analizirani su optičkim mikroskopom, a dodatna analiza elektrolitnih otopina i površinskih slojeva Ti provedena je infracrvenom spektroskopijom s Fourierovom transformacijom tehnikom univerzalne prigušene totalne refleksije (FTIR-UATR). Dobiveni rezultati pokazuju kako je etanolni ekstrakt propolisa mješoviti inhibitor korozije Ti u simuliranim uvjetima usne šupljine. Najveća inhibitorska djelotvornost 78 % postignuta je pri 36 °C, a povećanjem temperature inhibitorska djelotvornost se smanjuje. Izračunate energije aktivacije i termodinamički aktivacijski parametri ukazuju na to da se inhibicija korozije Ti etanolnim ekstraktom propolisa odvija fizisorpcijom, a proces adsorpcije je endoterman. Metodom FTIR-UATR u slojevima na površini uzoraka Ti identificirane su funkcionalne skupine prisutne u propolisu.
Abstract (english)
Titanium (Ti) has become the standard material for dental implants due to its high corrosion resistance, excellent biocompatibility, repassivation ability, and suitable mechanical properties. The corrosion resistance of this material is related to the presence of a protective oxide layer on its surface. However, the oral cavity is a complex environment that can adversely affect titanium implants' corrosion resistance, longevity and integrity. One of the most commonly applied methods for protecting metals from corrosion is the use of corrosion inhibitors. In this study, the effect of ethanolic propolis extract on the corrosion behavior of titanium in simulated oral cavity conditions at different temperatures was investigated. The research was conducted using electrochemical methods (open circuit potential measurement method, linear polarization, and potentiodynamic polarization method). Following a sequence of electrochemical tests, an optical microscope was used to analyze the Ti surface layers. After that, the electrolyte solutions and the Ti surface layers were further examined using Fourier transform infrared spectroscopy employing universal attenuated total reflectance (FTIR-UATR). The results indicated that an ethanolic propolis extract acts as a mixed-type corrosion inhibitor for Ti under simulated conditions in the oral cavity. The maximum inhibitory efficiency of 78 % was achieved at 36 °C; the inhibitory efficiency decreases with increasing temperature. The determined activation energies and thermodynamic activation parameters show that an ethanolic propolis extract inhibits the corrosion of Ti by physisorption with an endothermic adsorption process. The functional groups present in the propolis were identified in the layers on the surface of the Ti samples using the FTIR-UATR method.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:856358
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures, Materials and Environmental protection
Course: Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsEmbargoed access
Embargo expiration date: 2026-01-23
Terms of useLicence In copyright icon
Created on2025-01-23 09:03:15