prikaz prve stranice dokumenta Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije
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master's thesis
Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. urn:nbn:hr:149:265772
Murgić, Klara
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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Murgić, K. (2021). Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije (Master's thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:265772

Murgić, Klara. "Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:265772

Murgić, Klara. "Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije." Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:149:265772

Murgić, K. (2021). 'Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije', Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 29 March 2025, https://urn.nsk.hr/urn:nbn:hr:149:265772

Murgić K. Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije [Master's thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2021 [cited 2025 March 29] Available at: https://urn.nsk.hr/urn:nbn:hr:149:265772

K. Murgić, "Istraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije", Master's thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:149:265772

Metadata
TitleIstraživanje starenja i ponašanja mikroplastike nakon ubrzane termodegradacije
Title (english)Study of aging and microplastic behaviour after accelerated thermodegradation
AuthorKlara Murgić
MentorZlata Hrnjak-Murgić (mentor)
Committee memberZlata Hrnjak-Murgić (predsjednik povjerenstva)
Committee memberMirela Leskovac (član povjerenstva)
Committee memberNevenka Vrbos (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2021-09-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu simuliran je proces atmosferskog toplinskog starenja polimernog materijala u sušioniku (procesa koji se odvija u okolišu nakon odlaganja plastičnog otpada) kojim nastaje mikroplastika, te je provedena karakterizacija uzoraka nakon simuliranog procesa starenja. U tu svrhu korišteni su komercijalni polimerni materijali: poli(etilen tereftalat) (PET) boce za vodu i PET folije. Starenje je provedeno u nekoliko vremenskih perioda; 14 dana, 28 dana i 42 dana, a svaki dan predstavljao je... More jedan ciklus starenja. Jednodnevni ciklus sastojao se od: 16h starenja pri temperaturi od 70 °C, 4 h pri temperaturi od 70 °C u prisutstvu povećane vlage i 2h u zamrzivaču na -18 °C. U svrhu praćenja procesa degradacije, određivanja toplinske stabilnosti i sadržaja adsorbirane vlage, ispitivanja mehaničkih svojstava, te analiziranja morfologije i površinskih svojstava starenih uzoraka, provedeni je karakterizacija: infracrvenom spektroskopijom (FTIR), termogravimetrijski (TGA), testom naprezanje-istezanje, pretražnim elektronskim mikroskopom (SEM) te mjerenjem kontaktnog kuta. Rezultati svih navedenih metoda su dokazali promjenu svojstava, strukture i kemijskog sastava molekula PET polimera s vremenom toplinskog starenja, ali u manjoj mjeri. Time je potvrđeno da je proces degradacije PET polimera u okolišu dugotrajan proces. Less
Abstract (english)
In this work, the process of atmospheric thermal aging of polymer material (the process that takes place in the environment after the disposal of plastic waste), by which microplastics are formed was simulated, and the characterization of samples has been performed after aging. For this purpose, commercial polymer materials were used: poly(ethylene terephthalate) (PET) bottles and PET foils. Aging was carried out in several time periods; 14 days, 28 days and 43 days, and each day represented... More one aging cycle. The one-day cycle consisted of: 16 h aging at 70 °C, 4 h at 70 °C in the presence of increased humidity and 2h in the freezer at -18 °C. To monitoring of the degradation process, determination of thermal stability, moisture adsorbtion, testing of mechanical properties, analysis of morphology and surface properties of aged samples, the characterization were performed on next methods: infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), mechanical testing machine, scanning electron microscopy (SEM) and contact angle measurements. The results of all these methods proved the change of properties, structure and chemical composition of PET polymer molecules with the time of thermal aging, but to a lower extent. The results confirmed that the process of PET polymers degradation in the environment is a long-term process. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:265772
ProjectNumber: IP-2020-02-6033
Title: Mikroplastika u vodi; sudbina, ponašanje i uklanjanje
Title: Microplastics in water; fate and behavior and removal
Acronym: ReMiCRO
Leader: Ana Lončarić Božić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Materials Science and Engineering - Graduate study
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 conditionsClosed access
Terms of useLicence In copyright icon
Created on2023-04-19 13:37:48
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