20.500.12556/RUL-172058 Funkcionalizacija bombažne tkanine s plazmo in ekstraktom zlate rozge Functionalisation of Cotton Fabric with Plasma and Goldenrod Extract Invazivne tujerodne rastline predstavljajo velik ekološki izziv, a hkrati priložnost za trajnostno rabo biomase. V magistrskem delu smo zlato rozgo (Solidago gigantea), eno najpogostejših invazivnih plevelov, najdenih v Sloveniji, raziskali kot vir naravnih barvil oz. fitokemikalij za funkcionalizacijo bombažnih tekstilij. Glavni cilj je bil oceniti vpliv nizkotlačne plinske plazme amonijaka na bombažni substrat in afiniteto do barvila iz vodnega izvlečka zlate rozge ter primerjati njen učinek s hitozanom kot bio-čimžo. Za referenco smo barvali tudi svilo, brez predhodne plazemske obdelave, ki zaradi naravne vsebnosti dušikovih funkcionalnih skupin kaže dobro afiniteto do naravnih barvil. Bombažne vzorce smo s plazmo obdelali pri različnih pogojih ter predobdelali tudi vzorec s hitozanom. Sledilo je barvanje oz. funkcionalizacija z izvlečkom zlate rozge. Rezultati so pokazali, da je najbolj optimalen čas plazemske obdelave 5 minut, saj je bila vsebnost dušika na površini vzorca najvišja, mikroskopski posnetki pa niso razkrili poškodb vlaken. Tako obdelan vzorec je imel tudi najboljšo globino obarvanja (K/S = 0,99) in UV zaščito (UFZ = 83,88). Predobdelava s hitozanom je tudi izboljšala obarvljivost bombaža, ne pa obstojnosti pri pranju in UV-izpostavljenosti. Rezultati kažejo, da 5-minutna obdelava s plazmo amonijaka znatno poveča afiniteto bombaža do barvila iz zlate rozge in izboljša UV zaščitne lastnosti ter obstojnost na UV sevanje, ne da bi poškodovala vlakna. Obdelava s plazmo amonijaka tako predstavlja potencial za razvoj trajnostnega postopka predobdelave celuloze za nadaljnje funkcionaliziranje z vodnimi izvlečki naravnih barvil. Invasive plants present a major ecological challenge, but also an opportunity for the sustainable use of biomass. In this master thesis we investigated the goldenrod (Solidago gigantea), one of the most common invasive weeds found in Slovenia, as a source of natural dyes or phytochemicals for the functionalisation of cotton textiles. The main objective was to evaluate the effect of low-pressure gaseous plasma treatment with ammonia on the cotton substrate and the affinity to the dye from the aqueous extract of goldenrod and to compare its effect with chitosan as a bio-mordant. As a reference, silk was also dyed without the plasma pre-treatment, which shows a good affinity for natural dyes due to its natural content of nitrogen functional groups. Cotton samples were treated with plasma at different conditions, and a sample was also pre-treated with chitosan. This was followed by dyeing or functionalisation with goldenrod extract. The highest nitrogen content on the samples’ surface was achieved at the optimum plasma treatment time of 5 min; microscopic images also revealed no fibre damage. The sample treated in this way also had the best depth of staining (K/S = 0.99) and UV protection (UPF = 83.88). The chitosan pre-treatment also improved the colour fastness of the cotton, but not the wash fastness and UV exposure. The results show that ammonia plasma treatment for 5 minutes significantly increases the affinity of the cotton for the goldenrod dye and improves the UV protection properties and UV stability without damaging the fibres. Ammonia plasma treatment thus represents a potential for the development of a sustainable pre-treatment of cellulose for further functionalisation with natural aqueous extracts. zlata rozga nizkotlačna plinska plazma amonijak bombaž naravna barvila barvna globina (K/S) UV zaščita. goldenrod low-pressure gaseous plasma ammonia cotton natural dyes colour depth (K/S) UV protection. true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-09-05 09:01:26 2025-09-05 09:01:31 2025-10-03 03:55:02 0000-00-00 00:00:00 2025 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 107061 25627.pdf 25627.pdf 1 CA03B0556238D42A5AD054AE3368205C 79055516bad2d806b939127318879e8c85ecfd26c4e49bb291764472bbb1e443 0098f3f8-8a26-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=215782 Naravoslovnotehniška fakulteta 0 0 0