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master's thesis
Reološka karakterizacija sumouređujućih gel strukturu
2018. urn:nbn:hr:182:886260
Golubičić, Tomislav
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Golubičić, T. (2018). Reološka karakterizacija sumouređujućih gel strukturu (Master's thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:886260

Golubičić, Tomislav. "Reološka karakterizacija sumouređujućih gel strukturu." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2018. https://urn.nsk.hr/urn:nbn:hr:182:886260

Golubičić, Tomislav. "Reološka karakterizacija sumouređujućih gel strukturu." Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2018. https://urn.nsk.hr/urn:nbn:hr:182:886260

Golubičić, T. (2018). 'Reološka karakterizacija sumouređujućih gel strukturu', Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 25 April 2024, https://urn.nsk.hr/urn:nbn:hr:182:886260

Golubičić T. Reološka karakterizacija sumouređujućih gel strukturu [Master's thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2018 [cited 2024 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:182:886260

T. Golubičić, "Reološka karakterizacija sumouređujućih gel strukturu", Master's thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:182:886260

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Metadata
TitleReološka karakterizacija sumouređujućih gel strukturu
Title (english)Rheological characterization of self-assembled gel structures
AuthorTomislav Golubičić
MentorAleksandar Sečenji (mentor)
Committee memberTomislav Balić (predsjednik povjerenstva)
Committee memberAleksandar Sečenji (član povjerenstva)
Committee memberOlivera Galović (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2018-07-17, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Organic Chemistry
Abstract
Pripremljeni su samouređujući gelovi miješanjem 2 mL i 1 mL modificiranih silikatnih nanočestica koncentracije 0,01825 g/mL te 4% otopinom alginata. Silikatne nanočestice su pripremljene Stöberovom metodom iz tetraetil ortosilikata dodatkom amonijaka. Kako bi odredio optimalan pH za nastajanje gela pogodnih karakteristika, izmjeren je zeta potencijal u ovisnosti o pH vrijednosti. Dobiveni gelovi su reološki karakterizirani kako bi se dokazala tiksotropija. Iz dobivenih mjerenja se pokazalo kako je optimalan pH za dobivanje gela pogodnih reoloških svojstava 7, a volumen dodanih modificiranih silikatnih nanočestica 1 mL. Gel pripremljen s 2 mL modificiranih silikatnih nanočestica je imao veću početnu viskoznost zbog većeg broja veza koje nastaju prilikom umrežavanja.
Abstract (english)
Self-assembled gel structures were prepared by mixing 1 mL and 2 mL of modified silica nanoparticles concentration 0.01825 g/mL with 4 % solution of alginate. Silica nanoparticles were prepared with Stöber synthesis from tetraethyl orthosilicate adding ammonia solution. For determination of optimal pH value, zeta potential on different pH values was measured. Obtained gels were rheological characterized to demonstrate thixotropy. Obtained measurements showed that optimal pH value is 7, and volume of added modified silica nanoparticles is 1 mL. Gel prepared by adding 2 mL of modified silica nanoparticles have higher initial viscosity. The main reason for that is higher number of bonds formed when gel framework is made.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:886260
Study programmeTitle: Graduate University Study of Chemistry; research direction
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2018-12-27 13:24:34