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master's thesis
UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće)
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. urn:nbn:hr:149:558630
Lončar, Helena
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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Lončar, H. (2024). UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće) (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:558630

Lončar, Helena. "UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće)." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:558630

Lončar, Helena. "UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće)." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:149:558630

Lončar, H. (2024). 'UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće)', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:558630

Lončar H. UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće) [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2024 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:558630

H. Lončar, "UV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće)", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:149:558630

Metadata
TitleUV razgradnja PLA biokompozita ojačanih otpadom masline (drvo i lišće)
Title (english)UV degradation of PLA biocomposites reinforced with olive waste (wood andleaves)
AuthorHelena Lončar
MentorEmi Govorčin Bajsić (mentor)
Committee memberEmi Govorčin Bajsić (predsjednik povjerenstva)
Committee memberLjerka Kratofil Krehula (član povjerenstva)
Committee memberMirela Leskovac (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2024-09-25, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U svrhu ovog rada provedena je UV razgradnja biokompozita proizvedenih od poli(mliječne kiseline) (PLA) s dodatkom otpada masline u različitim udjelima (2,5%, 5%, 7,5% i 10 mas.%), bez i s dodatkom plastifikatora trietil citrata (TEC) u udjelu od 20 mas.%. Cilj je istražiti utjecaj UV zračenja na svojstva PLA biokompozita koji se mogu koristiti kao ambalažni materijali zbog njihove zdravstvene i ekološke sigurnosti. Svi uzorci su podvrgnuti UV razgradnji tijekom 720h. Promjene u strukturi nakon UV zračenja praćene su Infracrvenom spektroskopijom s Fourierovom transformacijom (FTIR) dok su toplinska svojstva određena diferencijalnom pretražnom kalorimetrijom (DSC). Rezultati su pokazali da UV razgradnja utječe na kemijsku i toplinsku stabilnost biokompozita, što ima značajan utjecaj na njihovu dugovječnost i primjenjivost kao ambalažnog materijala.
Abstract (english)
This study investigated the UV degradation of biocomposites made from poly(lactic acid) (PLA) with the addition of olive waste at various content (2.5%, 5%, 7.5%, and 10 wt.%), withouth and with the addition of the plasticizer triethyl citrate (TEC) at a concentration of 20 wt%. The aim was to investigated the effect of UV irradiation on the properties of PLA biocomposites that can be used as a packaging material due to their health and environmental safety. All samples were subjected to UV degradation over a period of 720h to examine the changes caused by photodegradation. Measurements were conducted using Fourier Transform Infrared Spectroscopy (FTIR) to investigate structural changes induced by UV irradiation, and Differential Scanning Calorimetry (DSC) to determine thermal properties. The results indicated that UV degradation affects the chemical and thermal stability of the biocomposites, which has a significant impact on their longevity and suitability as packaging materials.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:558630
Study programmeTitle: Materials Science and Engineering - Graduate study
Study programme type: university
Study level: graduate
Academic / professional title: sveučilišni/a magistar/magistra inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-11-06 13:59:50