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Vpliv dodatka različnih vrst nanoceluloze na lastnosti poli(vinil alkohol)nega filma [Elektronski vir] : magistrsko delo = The effects of the addition of different types of nanocellulose on the properties of poly(vinyl alcohol) film : M. Sc. ThesisKunstelj, Matija, lesarstvo, 1998-Eden najbolj zanimivih biološko sprejemljivih polimerov za izdelavo embalažnih folij je poli(vinil alkohol) (PVA). PVA je vodotopen sintetični polimer z odličnimi lastnostmi za tvorbo filma. Z ... dodatkom različnih vrst celuloznih nanofibril (CNF), ki smo jih pridobili iz lesa, smo poizkušali izboljšati odpornost na vlago in mehanske lastnosti. Raziskava je osnovana na različnih tipih celuloznih nanofibril, ekstraktu grče bele jelke (Abies alba) in biološko sprejemljivem polimeru PVA. Celulozne nanofibrile (CNF) smo pripravili na dva različna načina. Z obema predobdelavama smo na površini CNF pridobili negativen naboj (odboj med fibrilami), zaradi česar je bila nadaljnja mehanska obdelava (HPH) energetsko manj potratna. V prvem primeru smo po HPH pridobili TEMPO CNF, v drugem pa celulozne nanofibrile z večjim deležem lignina LCNF. Pridobljene celulozne nanofibrile smo uporabili kot ojačitev za PVA filme. Antioksidativne spojine smo pridobili z ekstrakcijo živih in mrtvih grč v sistemu Thermo Dionex ASE 350. V različnih deležih smo ekstrakt mešali s PVA matrico, ki smo ji dodali tudi različne tipe CNF. Razvitim filmom smo izmerili mehanske lastnosti, stični kot z vodno kapljico in opravili FTIR analizo. Iz rezultatov nateznega testa lahko razberemo, da je potrebna količina dodanih CNF relativno majhna glede na procent izboljšanja mehanskih lastnosti. Poleg celuloznih nanofibril smo polimerni raztopini dodali tudi ekstrakt bele jelke, s čemer smo izboljšali antioksidativne lastnosti filmov.Type of material - master's thesis ; adult, seriousPublication and manufacture - Ljubljana : [M. Kunstelj], 2024Language - slovenianCOBISS.SI-ID - 200198915
Author
Kunstelj, Matija, lesarstvo, 1998-
Other authors
Poljanšek, Ida |
Vek, Viljem |
Oven, Primož
Topics
celulozne nanofibrile |
kompoziti |
poli(vinil alkohol) |
ekstrakt |
film |
cellulose nanofibrils |
composites |
poly(vinyl alcohol) |
extract |
film
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kunstelj, Matija, lesarstvo, 1998- | ![]() |
Poljanšek, Ida | 12041 |
Vek, Viljem | 30758 |
Oven, Primož | 11223 |
Source: Personal bibliographies
and: SICRIS
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