Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane

Klepac, Damir

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doctoral thesis

Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane

Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2012. urn:nbn:hr:159:399619

Klepac, Damir

University of Zagreb
Faculty of Food Technology and Biotechnology

Cite this document

APA 6th Edition

Klepac, D. (2012). Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:399619

MLA 8th Edition

Klepac, Damir. "Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane." Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2012. https://urn.nsk.hr/urn:nbn:hr:159:399619

Chicago 17th Edition

Harvard

Klepac, D. (2012). 'Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane', Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 25 April 2024, https://urn.nsk.hr/urn:nbn:hr:159:399619

Vancouver

Klepac D. Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2012 [cited 2024 April 25] Available at: https://urn.nsk.hr/urn:nbn:hr:159:399619

IEEE

D. Klepac, "Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane", Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2012. Available at: https://urn.nsk.hr/urn:nbn:hr:159:399619

Cite this item: https://urn.nsk.hr/urn:nbn:hr:159:399619

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Metadata

Title	Utjecaj strukture na barijerne karakteristike polimernih materijala za pakiranje hrane
Title (english)	Influence of structure on barrier characteristics of polymer materials for food packaging
Author	Damir Klepac
Mentor	Srećko Valić (mentor)
Committee member	Vesna Lelas (predsjednik povjerenstva)
Granter	University of Zagreb Faculty of Food Technology and Biotechnology Zagreb
Defense date and country	2012-04-18, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Food Technology
Universal decimal classification (UDC)	678 - Industries based on macromolecular materials. Rubber industry. Plastics industry
Abstract	Cilj ove disertacije bio je ispitati utjecaj jednoosne mehaničke deformacije, γ-zračenja i ubrzanog termičkog starenja na propusnost kisika kroz polimerne filmove: linearni polietilen niske gustoće (PE-LLD) i lijevani polipropilen (PPcast). Strukturne promjene ispitivane su metodama razlikovne pretražne kalorimetrije (DSC), elektronske spinske rezonancije (ESR), spektroskopije pozitronske anihilacije (PALS) i Fourier transform infracrvene spektroskopije (FTIR). Utvrđeno je da navedeni čimbenici općenito smanjuju propusnost kisika kroz ispitivane filmove. Smanjenje propusnosti je rezultat promjena u stupnju kristaliničnosti, ukupnom slobodnom volumenu i gibljivosti lanaca polimera.
Abstract (english)	The aim of this thesis was to investigate the influence of uniaxial mechanical deformation, γ-irradiation and accelerated thermal aging on oxygen permeability through polymer films of linear low density polyethylene (PE-LLD) and cast polypropylene (PPcast). Structural changes were investigated by differential scanning calorimetry (DSC), electron spin resonance (ESR), positron annihilation spectroscopy (PALS) and Fourier transform infrared spectroscopy (FTIR). It was found that these factors generally decrease oxygen permeability in investigated films. The reduction of permeability results from changes in the degree of crystallinity, fractional free volume and polymer chain mobility.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:159:399619
Promotion	2012-09-30
Study programme	Title: Food Technology Study programme type: university Study level: postgraduate Academic / professional title: doktor/doktorica znanosti (doktor/doktorica znanosti)
Type of resource	Text
File origin	Born digital
Access conditions	Access restricted to students and staff of home institution
Terms of use
Repository	Repository of the Faculty of Food Technology and Biotechnology
Created on	2018-05-17 08:10:38

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