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Title:Razvoj novih funkcionalnih plastičnih filmov za različne produkte : magistrsko delo
Authors:ID Labohar, Tanja (Author)
ID Fras Zemljič, Lidija (Mentor) More about this mentor... New window
ID Škerget, Mojca (Comentor)
ID Smole Možina, Sonja (Comentor)
Files:.pdf MAG_Labohar_Tanja_2023.pdf (4,76 MB)
MD5: EA29120ADB024D5532A054B59AB70BCA
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:Plastični materiali imajo velik pomen v pakirnem segmentu za pakiranje farmacevtskih, kozmetičnih in prehrambnih produktov, kjer želimo podaljšati rok trajanja živil. Vedno večje zavedanje podjetij in potrošnikov o negativnem vplivu petrokemijske plastike na okolje in povečano tveganje za zdravje, ki ga predstavljajo sintetični aditivi v plastični embalaži, so privedli do razvoja biorazgradljive aktivne embalaže. V magistrskem delu smo želeli razviti antioksidativne, protimikrobne in biorazgradljive funkcionalne plastične filme. Folije PLA smo funkcionalizirali s premazom iz formulacije ekstrakta brina in hitozana, ki smo ga na površino folije nanesli s petimi različnimi metodami, in sicer z metodo pršenja, valjčkanja, omakanja, impregniranja in tehnologijo superkritičnih fluidov. Učinkovitost uporabljenih snovi in metod smo preučili z analiznimi metodami: FTIR, goniometrija, pregradne lastnosti – prepustnost kisika, antioksidativnost, XPS, SEM, transparentnost, protimikrobna aktivnost ter LCA in LCC analiza. Z analiznimi metodami smo potrdili odlično antioksidativno delovanje ekstrakta brina in protimikrobno delovanje hitozana. Izkazalo se je, da je za praktično uporabo z vidika okoljske in cenovne ustreznosti najprimernejši funkcionalni plastični film, kjer smo premaz nanesli z metodo omakanja. Dosegli smo odlično protimikrobno delovanje predvsem na bakterijo Staphylococcus aureus, izvrstne pregradne in antioksidativne lastnosti, potrjene s FTIR, XPS in SEM analizo, ter zelo dobre protikondenzacijske lastnosti.
Keywords:funkcionalni plastični filmi, folija PLA, hitozan, ekstrakt brina, tehnologije nanosa, fizikalno-kemijske analize, protimikrobna aktivnost, LCA, LCC
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[T. Labohar]
Year of publishing:2023
Number of pages:1 spletni vir (1 datoteka PDF (XVI, 110 f.))
PID:20.500.12556/DKUM-86087 New window
UDC:544.023.2:[604.4:615.3](043.2)
COBISS.SI-ID:183665667 New window
Publication date in DKUM:06.12.2023
Views:635
Downloads:93
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:05.10.2023

Secondary language

Language:English
Title:Development of new functional plastic films for various products
Abstract:Plastic materials are important in the packaging of pharmaceutical, cosmetic, and food products, where we want to extend the shelf life. The increasing awareness of companies and consumers of the negative environmental impact of petrochemical plastics and the increased health risks posed by added synthetic additives in plastic packaging have led to the development of biodegradable active packaging. In the master thesis, we aimed to develop antioxidant, antimicrobial, and biodegradable functional plastic films. PLA films were functionalized with a coating made from a formulation of juniper extract and chitosan, which was applied to the film surface by five different methods, namely spraying, rolling, dipping, impregnation, and supercritical fluid technology. The performance of the substances and methods used was investigated by FTIR, goniometry, barrier properties - oxygen permeability, antioxidant capacity, XPS, SEM, transparency, antimicrobial activity, LCA and LCC analysis. The excellent antioxidant activity of juniper extract and the antimicrobial activity of chitosan were confirmed by analytical methods. The dip coated functional plastic film proved to be the most suitable for practical use in terms of environmental friendliness and cost-effectiveness. We have achieved excellent antimicrobial performance, especially against Staphylococcus aureus, excellent barrier and antioxidant properties (confirmed by FTIR, XPS, and SEM analysis) and very good anti-condensation properties.
Keywords:functional plastic films, PLA film, chitosan, juniper extract, coating technologies, physicochemical analyses, antimicrobial activity, LCA, LCC


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