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master's thesis
Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola)
diplomski rad
2022. urn:nbn:hr:167:148593
Grgičević, Marija
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Cite this document

Grgičević, M. (2022). Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:148593

Grgičević, Marija. "Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:148593

Grgičević, Marija. "Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:148593

Grgičević, M. (2022). 'Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 19 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:148593

Grgičević M. Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2022 [cited 2024 November 19] Available at: https://urn.nsk.hr/urn:nbn:hr:167:148593

M. Grgičević, "Sinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:167:148593

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Metadata
TitleSinteza i karakterizacija MgO iz gorke morske vode uz dodatak poli (vinil-alkohola) : diplomski rad
Title (english)Synthesis and characterization of MgO from sea bittern with addition of poly (vinyl-alcohol) : master thesis
AuthorMarija Grgičević
MentorJelena Jakić (mentor)
Committee memberMiroslav Labor (predsjednik povjerenstva)
Committee memberDamir Barbir (član povjerenstva)
Committee memberJelena Jakić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2022-10-20, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Ispitivao se utjecaj dodatka poli(vinil–alkohola) kao surfaktanta tijekom sinteze na veličinu i aglomeraciju čestica magnezijeva oksida istaloženog iz gorke morske vode. Sinteza se vršila procesom precipitacije u stehiometrijskom odnosu sa zasićenom vodom vapnenicom kao taložnim reagensom. Poli(vinil–alkohola) dodavao se u masenom omjeru (1:4) i (1:5) u odnosu na masu magnezijeva hidroksida koji se procesom dobiva. Uzorci su karakterizirani kemijskom analizom, TG/DTG, TEM analizom te je određena raspodjela veličina čestica. Dobiveni rezultati ukazuju na pozitivan utjecaj dodatka surfaktanta jer je mikrostruktura svih uzoraka ujednačena, utječe na smanjenje veličine čestica i sprječava nakupljanje čestica ali ne sprječava potpuno stvaranje aglomerata. Nastali aglomerati su manji vjerojatno zbog manjih čestica koje su nastale zbog prisutnosti poli(vinil–alkohola) tijekom sinteze. Povećanjem dodatka poli(vinil–alkohola) smanjuje se veličina čestica dobivenog taloga magnezijevog oksida te se dobivaju aglomerati srednje veličine čestica 1034,18 nm.
Abstract (english)
The effect of the addition of poly(vinyl–alcohol) as a surfactant during synthesis on the size and agglomeration of magnesium oxide particles precipitated from sea bittern was studied. The synthesis was carried out by a stoichiometric precipitation process using saturated limestone water as precipitation reagent. Poly(vinyl–alcohol) was added in a mass ratio of (1:4) and (1:5) in proportion to the mass of magnesium hydroxide obtained by the process. The samples were characterized by chemical analysis, TG/DTG, TEM analysis, and determination of particle size distribution. The results obtained indicate a positive influence of the addition of surfactants, since the microstructure of all samples is uniform, the particle size is reduced and the accumulation of particles is prevented, but the formation of agglomerates is not completely prevented. The resulting agglomerates are smaller, likely due to the smaller particles formed by the presence of poly(vinyl–alcohol) during synthesis. With increasing addition of poly(vinyl– alcohol), the particle size of the resulting magnesium oxide precipitate decreases and agglomerates with an average particle size of 1034.18 nm are obtained.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:148593
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 conditionsOpen access
Embargo expiration date: 2023-11-22
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Created on2022-11-22 10:46:23