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undergraduate thesis
Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida)
završni rad
2022. urn:nbn:hr:167:476088
Karaman, Lucija
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Karaman, L. (2022). Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:476088

Karaman, Lucija. "Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:476088

Karaman, Lucija. "Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:476088

Karaman, L. (2022). 'Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:476088

Karaman L. Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2022 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:167:476088

L. Karaman, "Utjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:167:476088

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Metadata
TitleUtjecaj kalcijevog alginata na strukturu i toplinska svojstva poli(etilen-oksida) : završni rad
Title (english)The influence of calcium alginate on the structure and thermal properties of poly(ethylene-oxide) : bachelor thesis
AuthorLucija Karaman
MentorSanja Perinović Jozić (mentor)
Committee memberBranka Andričić (predsjednik povjerenstva)
Committee memberJelena Jakić (član povjerenstva)
Committee memberSanja Perinović Jozić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2022-09-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Modifikacija svojstava poli(etilen-oksida) (PEO) provedena je dodatkom kalcijevog alginata (CaAlg) s ciljem smanjena stupnja kristalnosti PEO-a, a u svrhu primjene mješavine kao krutog polimernog elektrolita. Uspješno su pripravljene mješavine PEO/CaAlg pomoću ekstrudera s dvopužnim kontrarotirajućim vijcima. Primjenom infracrvene spektroskopije s Fourierovom transformacijom (FTIR) nisu potvrđene značajnije interakcije između PEO-a i CaAlg-a. Diferencijalna pretražna kalorimetrija (DSC) je primijenjena u svrhu istraživanja utjecaja CaAlg-a na toplinska svojstva i kristalnost PEO-a. Uočava se djelomična mješljivost mješavine PEO/CaAlg. Udio kristalne faze PEO-a kod svih mješavina nije značajno promijenjen. Toplinska postojanost mješavina istraživana je primjenom neizotermne termogravimetrije (TG). Polimerne mješavine PEO/CaAlg razgrađuju se u tri stupnja razgradnje. Dodatak i povećanje udjela CaAlg-a pogoršava toplinsku postojanost ispitivanih mješavina. Najveći potencijal za pripravu SPE s kalcijevim solima ima mješavina 80PEO/20CaAlg.
Abstract (english)
The modification of properties of poly(ethylene oxide) (PEO) was performed by adding calcium alginate (CaAlg) with the aim of reducing its crystallinity and therefore improving its conductivity. All blends were successfully prepared with a counter rotating twin screw extruder. By applying Fourier-transform infrared spectroscopy (FTIR) there were no significant interactions confirmed between PEO and CaAlg. Differential scanning calorimetry (DSC) has been applied to investigate the influence of CaAlg on thermal properties and crystallinity of PEO. Partial miscibility of PEO/CaAlg blend occurs. The degree of crystallinity of PEO is still very large in every blend. Thermal stability of blends was investigated using non-isothermal thermogravimetry (TG). PEO/CaAlg polymer blends degrade through three degradation degrees. Addition and increase of CaAlg worsens thermal stability of examined blends. The biggest potential for preparation of SPE with calcium salts has the 80PEO/20CaAlg blend.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:476088
Study programmeTitle: Chemical Technology; specializations in: Chemical Engineering, Environmental Protection
Course: Chemical Engineering
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
Access conditionsOpen access
Embargo expiration date: 2023-05-21
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Created on2022-10-21 06:14:37