magistrsko delo
Nejc Lebar (Author), Julija Volmajer Valh (Mentor), Alen Erjavec (Co-mentor)

Abstract

Vsesplošna rast rabe plastičnih materialov je vidna na vseh področjih, tudi na področju kmetijstva, kjer ima nekatere pozitivne učinke. Pozitivne lastnosti plastičnih materialov v času rabe postanejo okoljsko breme po koncu uporabe, ko je material treba odstraniti. V raziskovalnem delu smo opazovali in okarakterizirali degradacijo folije iz polietilena nizke gostote (LDPE), ki se uporablja za zaščito silaže in bal za seno. Oceno degradacije materiala zaradi izpostavljenosti okoljskim vplivom smo izvedli z laboratorijskimi simulacijami teh pogojev v vodnem mediju, v zemlji in s pomočjo komore za simulacijo vremenskih vplivov (ksenon test). Za karakterizacijo materiala smo uporabili infrardečo spektroskopijo s Fourierjevo transformacijo, termogravimetrično analizo, goniometrijo, gravimetrijo, optično mikroskopijo, karakterizacijo sežiga materiala in analizo vodnega medija. Glavne ugotovitve karakterizacije LDPE folije so, da na degradacijo najbolj vpliva ultravijolično sevanje, vendar je material obdelan tako, da v kratkem času izpostavljenosti vremenskim vplivom ne pride do drastičnih sprememb lastnosti. Zaradi tega je pomembno kaj se z materialom zgodi po uporabi, ko ga zavržemo.

Keywords

silažna folija;polietilen nizke gostote (LDPE);degradacija;ksenon test;izpostavljenost v zemlji;izpostavljenost v vodi;magistrske naloge;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: [N. Lebar]
UDC: [504.5:678.742.2]:631(043.2)
COBISS: 151769859 Link will open in a new window
Views: 179
Downloads: 42
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Other data

Secondary language: English
Secondary title: Study on the impact of silage foil on the environment
Secondary abstract: The widespread growth in the use of plastic materials is visible in all areas, including agriculture, where it is having some positive effects. Positive properties of plastic materials at the time of use become an environmental burden when being disposed of. In this research, the degradation of low-density polyethylene (LDPE) film wrap used to protect silage and hay bales was observed and characterized. The assessment of the degradation of the material due to exposure to environmental impacts was carried out by laboratory simulations of these conditions in aqueous media, in soil, and with weathering simulation chamber (xenon test). Fourier-transformed infrared spectroscopy, thermogravimetric analysis, goniometry, gravimetry, optical microscopy, characterization of the burning of the material, and analysis of the aqueous media were used to characterize the material. The main findings from the characterization of the LDPE film are that degradation is most affected by ultraviolet (UV) radiation, but the material is treated in such a way that no drastic changes in properties occur in a short exposure time to weathering. It is therefore important what happens to the material after use when it is disposed of.
Secondary keywords: silage foil;low-density polyethylene (LDPE);degradation;xenon test;soil burial test;exposure in water;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za strojništvo, Tehniško varstvo okolja
Pages: 1 spletni vir (1 datoteka PDF (XIV, 68 f.))
ID: 17253115