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master's thesis
Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. urn:nbn:hr:235:980349
Ribarić, Filip
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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Ribarić, F. (2014). Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi (Master's thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:980349

Ribarić, Filip. "Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:980349

Ribarić, Filip. "Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi." Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:980349

Ribarić, F. (2014). 'Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi', Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 14 January 2025, https://urn.nsk.hr/urn:nbn:hr:235:980349

Ribarić F. Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2014 [cited 2025 January 14] Available at: https://urn.nsk.hr/urn:nbn:hr:235:980349

F. Ribarić, "Utjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi", Master's thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:235:980349

Metadata
TitleUtjecaj izlaganja UV zračenju na dinamičko-mehanička svojstva etilen/vinil-alkoholnog kopolimera prethodno držanog u vodi
Title (english)Effect of UV radiation on dynamic-mechanical properties of ethylene-vinyl alcohol copolymer previously conditioned in water
AuthorFilip Ribarić
MentorTatjana Haramina (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2014-07-17, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Etilen/vinil-alkohol (EVOH) je kopolimer koji se sastoji od nepolarnog polietilena niske gustoće i polarnog poli(vinil-alkohola). Ovaj polimerni materijal se primjenjuje kada je postavljen zahtjev da proizvod bude nepropustan za plinove. Polimerni materijali podložni su raznim degradacijskim procesima uslijed izlaganja vanjskim uvjetima, što bitno utječe na njihova svojstva. Pomoću dinamičko-mehaničke analize ispitivani su uzorci EVOH folija s različitim udjelima etilena. Analiziran je utjecaj i UV zračenja na vodom zasićene folije i relaksacijske procese u njima. Uzorci folija su naizmjence držani u vodi pa ozračivani u kraćim ciklusima sve do ukupnog vremena zračenja od 45 minuta. Premda se uspoređivani kopolimeri jedva razlikuju po kemijskom sastavu, utjecaj vode i UV zračenja razlikuje se u ovisnosti o omjeru komponenata.
Abstract (english)
Ethylene vinyl alcohol (EVOH) is a copolymer of a non-polar low density polyethylene and polar poly(vinyl alcohol). This type of polymer is used when low gas permeability is needed. Polymers are susceptible to different degradation processes when exposed to external conditions. Those degradation processes have a significant impact on their properties. Dynamic Mechanical Analysis was performed on samples of EVOH foils with different ethylene content. The influence of UV radiation on water saturated foils and relaxation processes within them were analyzed. Foil samples were alternately held in water then irradiated in short cycles in order to achive a total of 45 minutes of irradiation time. Although the compared copolymers have a slight difference in their chemical composition the water and UV irradiation effect differs depending on the component ratio.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:980349
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 conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2019-05-22 11:22:10