20.500.12556/RUL-183906 Naravna barvila iz enoletne suholetnice in topinamburja Natural Dyes from Annual Fleabane and Jerusalem Artichoke Invazivne tujerodne rastline predstavljajo pomemben okoljski problem, saj s svojim širjenjem ogrožajo biotsko raznovrstnost. Ena izmed možnosti njihove trajnostne izrabe je uporaba kot vir naravnih barvil. Namen magistrskega dela je bil raziskati možnost uporabe cvetov enoletne suholetnice (lat. Erigeron annuus) in topinamburja (lat. Helianthus tuberosus) za pridobivanje naravnih barvil ter določiti optimalno topilo za pripravo sitotiskarskih barv in barvanje bombažne tkanine. V eksperimentalnem delu so bile iz pridobljenih barvilnih ekstraktov pripravljene sitotiskarske barve, s katerimi so bili izdelani odtisi na papirju in bombažni tkanini. Iz vodnih ekstraktov so bile pripravljene barvalne kopeli, kjer se je barvala bombažna tkanina ob prisotnosti kalijevega aluminijevega sulfata. Odtisi in obarvanja so bili vizualno in barvnometrično ovrednoteni, analizirane pa so bile tudi njihove barvne obstojnosti na svetlobo, suho in mokro drgnjenje, mokro vroče likanje ter pranje. Z ekstrakti topinamburja smo na substratih dobili izrazite rumene do rumeno-oranžne odtenke, z ekstrakti enoletne suholetnice pa bolj zelenkasto-rumene do olivno-zelene odtenke. Odtisi so pokazali odlične obstojnosti na suho in mokro drgnjenje ter na mokro vroče likanje, ter slabše svetlobne obstojnosti na bombažni tkanini. Obarvanja na bombažni tkanini so imela slabe svetlobne in pralne obstojnosti, slednje smo izboljšali z naknadno kationsko obdelavo. Rezultati raziskave potrjujejo, da so ekstrakti iz cvetov enoletne suholetnice in topinamburja primerni za barvanje bombažne tkanine z naknadno kationsko poobdelavo in za pripravo sitotiskarskih barv ter za tisk na papir in bombažno tkanino. Invasive alien plant species represent a significant environmental problem as their spread threatens biodiversity. One of the possible approaches for their sustainable utilization is their use as a source of natural dyes. The aim of this master’s thesis was to investigate the potential use of flowers of annual fleabane (Erigeron annuus) and Jerusalem artichoke (Helianthus tuberosus) for obtaining natural dyes and to determine the optimal solvent for the preparation of screen-printing inks and dyeing of cotton fabric. In the experimental part, screen-printing inks were prepared from the obtained dye extracts and used to produce prints on paper and cotton fabric. Dye baths were prepared from aqueous extracts where cotton fabric was dyed in the presence of potassium aluminum sulfate. The prints and dyed samples were evaluated visually and colorimetrically, and their color fastness to light, dry and wet rubbing, wet hot pressing and washing was also analyzed. Using extracts of Jerusalem artichoke, distinct yellow to yellow-orange shades were obtained on the substrates, while extracts of annual fleabane produced more greenish-yellow to olive-green shades. The prints showed excellent fastness to dry and wet rubbing and to wet hot pressing and lower light fastness on cotton fabric. Dyed cotton samples exhibited poor light and washing fastness and the latter was improved by subsequent cationic treatment. The results confirm that extracts from the flowers of annual fleabane and Jerusalem artichoke are suitable for dyeing cotton fabric with subsequent cationic post-treatment and for the preparation of screen-printing inks and printing on paper and cotton fabric. naravna barvila enoletna suholetnica topinambur barvanje sitotisk. natural dyes annual fleabane Jerusalem artichoke dyeing screen printing. true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-06-20 09:01:30 2026-06-20 09:01:45 2026-06-21 04:14:43 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 114108 29203.pdf 29203.pdf 1 A615CB8189FF48730F18A1CD23702830 12115ab766ad297dcffda11371b64830df22dfbb9200c78f11504c8f9e3f1e6c d6de7c3f-6c75-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=236215 Naravoslovnotehniška fakulteta 0 0 0