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undergraduate thesis
Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. urn:nbn:hr:149:677491
Krmelić, Lara
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

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Krmelić, L. (2024). Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:677491

Krmelić, Lara. "Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:677491

Krmelić, Lara. "Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:677491

Krmelić, L. (2024). 'Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 09 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:677491

Krmelić L. Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2024 [cited 2024 November 09] Available at: https://urn.nsk.hr/urn:nbn:hr:149:677491

L. Krmelić, "Priprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:149:677491

Metadata
TitlePriprema i karakterizacija prirodnih niskotemperaturnih eutektičkih otapala
Title (english)Natural deep eutectic solvent preparation and characterization
AuthorLara Krmelić
MentorJasna Prlić Kardum (mentor)
Committee memberJasna Prlić Kardum (predsjednik povjerenstva)
Committee memberAleksandra Sander (član povjerenstva)
Committee memberDajana Kučić Grgić (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2024-07-12, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Niskotemperaturna eutektička otapala pojavila su se prije sedamnaest godina u području zelene kemije te se intenzivno proučavaju kao ekološki prihvatljiva zamjena za štetna organska otapala. Smatraju se posebnom vrstom zelenih otapala zbog visoke topljivosti, niskih troškova te jednostavne metode pripreme i sinteze. Nastaju kombinacijom dvaju spoja: akceptora vodikove veze (HBA) i donora vodikove veze (HBD). Struktura i fizikalno-kemijska svojstva tih otapala mogu se dizajnirati za specifičnu primjenu. U ovom radu su pripremljena otapala koja se temelje na kolin kloridu i prirodnim organskim kiselinama. Provedena je fizikalno-kemijska karakterizacija pripremljenih DES-ova. Izmjerene su vrijednosti gustoće, viskoznosti te kiselost. Pratio se utjecaj promjene komponente koja je donor vodikove veze te dodatak masenog udjela vode na fizikalno-kemijska svojstava DESova. FTIR analizom je potvrđen nastanak strukture DES-a. Svi pripravljeni DES-ovi su kapljevine, izrazito kisele i visoke viskoznosti te se ponašaju kao Newtonovi fluidi. Gustoća im se kreće u rasponu od 1,18 do 1,33 g/cm^3. FTIR analizom dobiveni su pikovi karakteristični za DES-ove.
Abstract (english)
In the field of green chemistry, deep eutectic solvents first emerged seventeen years ago, and researchers are actively studying them as an environmentally friendly replacement for hazardous organic solvents.They are considered as a special type of green solvents due to their high solubility, low costs and simple methods of preparation and synthesis. They are formed by the combination of two compounds: a hydrogen bond acceptor (HBA) and a hydrogen bond donor (HBD). The structure and physicochemical properties of these solvents can be designed for a specific application. In this work, solvents were prepared based on choline chloride and natural organic acids. Physicochemical characterization was made for prepared DESs. Density, viscosity and acidity values were measured. The influence of the hydrogen bond donor component and adding a mass proportion of water on the physicochemical properties of DESs were investigated. FTIR research confirmed the formation of the DES structure. All DES are liquids, very acidic, highly viscous, and behave like Newtonian fluids. Their density changes between 1.18 and 1.33 g/cm^3. The FTIR investigation identified DES-specific peaks.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:677491
Study programmeTitle: Chemical Engineering - Undergraduate study
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
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Created on2024-07-19 14:04:16