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master's thesis
Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2020. urn:nbn:hr:235:374549
Đurasek, Matija
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

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Đurasek, M. (2020). Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:374549

Đurasek, Matija. "Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2020. https://urn.nsk.hr/urn:nbn:hr:235:374549

Đurasek, Matija. "Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2020. https://urn.nsk.hr/urn:nbn:hr:235:374549

Đurasek, M. (2020). 'Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 29 November 2024, https://urn.nsk.hr/urn:nbn:hr:235:374549

Đurasek M. Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2020 [cited 2024 November 29] Available at: https://urn.nsk.hr/urn:nbn:hr:235:374549

M. Đurasek, "Mogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:235:374549

Metadata
TitleMogućnosti upotrebe i degradacija kompostabilnih trgovačkih vrećica
Title (english)Opportunities and degradation of compostable shopping bags
AuthorMatija Đurasek
MentorIrena Žmak (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2020-07-14, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Prekomjerna upotreba polimernih vrećica dobivenih iz naftnih derivata i njihovo neprikladno zbrinjavanje predstavljaju značajne izazove za današnje društvo. Kako bi se smanjile ekološke posljedice sve veće potrošnje polimernih vrećica, započeo je intenzivniji razvoj biorazgradivih polimera te je Europska unija donijela zakone kojima se regulira potrošnja polimernih vrećica. U ovom diplomskom radu provedena je kvantitativna analiza degradacije svojstava vrećica od kompostabilnog biorazgradivog polimera. Iz vrećica su izrezani uzorci za ispitivanje vlačno-udarne čvrstoće, u skladu s normom ISO 8256. Tri skupine ispitnih uzoraka zakopane su svaka u različitu vrstu komposta, četvrta skupina je ostavljena na tlu, a peta u sobnim uvjetima. Ispitni uzorci su uzimani iz navedenih lokacija u tri navrata s razmakom od dvadeset dana. Ispitnim uzorcima izmjerena je debljina mikrometrom i ispitana vlačno-udarna čvrstoća. Primjetan je inicijalni pad vlačno-udarne čvrstoće između 25 i 40 %, nakon kojeg se vrijednost čvrstoće stabilizira. Nije utvrđena korelacija između promjene debljine i vlačno-udarne čvrstoće ispitnih uzoraka nakon kompostiranja.
Abstract (english)
The excessive use of polymer carrying bags made from petroleum and their inadequate waste management present significant challenges for temporary society. A stronger development of biodegradable polymers and the introduction of legislation regulating polymer carrying bag consumption is attempting to reduce the ecological consequences of the growing consumption of polymer carrying bags. In this Master thesis, a quantitative analysis of the mechanical properties degradation for compostable biodegradable polymer carrying bags was conducted. Specimens for the determination of tensile-impact strength according to the ISO 8256 standard were cut from carrying bags, according to the. Three groups of test specimen were placed each in a different type of compost, the fourth group was left lying on the ground, while the fifth group was in room conditions. The test specimens were removed from the aforementioned locations on three occasions with an interval of twenty days. The tensile-impact strength and the thickness of the test specimens were measured. A noticeable initial drop in strength between 25 and 40 % was observed, after which the tensile-impact strength was stabilised. There wasn’t any confirmed correlation between the reduced thickness and tensile-impact strength of the test specimens after composting.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:374549
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2020-07-08 14:39:41