20.500.12556/RUL-190910 Dyeing performance analysis of cotton knit fabric using water-sorbitol dyeing medium Analiza učinkovitosti barvanja bombažnega pletiva z uporabo barvnega sredstva na osnovi vode in sorbitola The conventional reactive dyeing process for cellulosic fibres, such as cotton, is fraught with challenges, particularly concerning the hydrolysis of dyes and the resultant-coloured sewage, which complicates wastewater treatment. This study introduces an innovative solution by integrating sorbitol into the dyeing process. By varying the proportions of sorbitol mixed with water, the researchers aimed to enhance dyeing efficiency while mitigating environmental impacts. The experimental procedure involved pre-treating knitted cotton fabric and preparing a dyeing liquor that combined sorbitol and water. Dyeing was performed using an infrared sample dyeing machine, which allows for more controlled and efficient dye application. To evaluate the results, colour strength and colour measurement characteristics (CMC) in the post-dye liquor were analysed using a Data Color 650 spectrophotometer. The findings revealed that fabrics dyed with sorbitol not only displayed higher chroma values but also resulted in a reduction of dye strength in the post-dye liquor. This indicates a significant decrease in the hydrolysis of reactive dyes, leading to lower costs associated with sewage treatment. Furthermore, colourfastness tests performed on the dyed fabrics demonstrated excellent performance, underscoring the effectiveness of this unique dyeing approach. Future research will focus on applying this method with various classes of reactive dyes in order to explore their performance based on different reactive groups to further enhance the non-aqueous medium dyeing of cotton in textile dyeing processes. Konvencionalni postopek reaktivnega barvanja celuloznih vlaken, kot je bombaž, je povezan s številnimi izzivi, še posebno zaradi hidrolize barvil in posledično obarvanih odpadnih voda, kar otežuje njihovo čiščenje. Raziskava predstavlja inovativno rešitev, ki v procesu barvanja vključuje uporabo sorbitola. S spreminjanjem količine sorbitola, pomešanega z vodo, smo želeli izboljšati učinkovitost barvanja ter istočasno zmanjšati vpliv na okolje. Eksperimentalni postopek je vključeval predobdelavo bombažnega pletiva ter pripravo barvalne kopeli, sestavljene iz sorbitola in vode. Barvanje je bilo izvedeno z barvalnim aparatom z IR segrevanjem, ki omogoča natančnejši nadzor nad procesom in učinkovitejši nanos barvila. Za ovrednotenje rezultatov so bili intenzivnost barve ter barvne vrednosti v barvalni kopeli po barvanju analizirani s spektrofotometrom Data Color 650. Rezultati so pokazali, da so tkanine, barvane s sorbitolom, izkazovale višje vrednosti krome, hkrati pa je bila v barvalni kopeli po barvanju zaznana manjša intenzivnost barve. Slednje kaže na znatno zmanjšanje hidrolize reaktivnih barvil, kar posledično vodi do nižjih stroškov čiščenja odpadnih voda. Preizkusi obstojnosti barv na barvanih tkaninah so ravno tako pokazali odlične rezultate, kar potrjuje učinkovitost tega novega pristopa k barvanju. Prihodnje raziskave se bodo osredotočile na uporabo barvanja s sorbitolom z različnimi reaktivnimi barvili ter na preučevanje njihove učinkovitosti, da bi še izboljšali barvanje bombaža v nevodnih medijih. cotton reactive dye sorbitol solvent dyeing bombaž reaktivna barva sorbitol barvanje v topilu true false true Angleški jezik Slovenski jezik Članek v reviji 2026-11-06 20:19:15 2026-11-06 20:19:24 2026-11-07 04:23:23 0000-00-00 00:00:00 2026 0 0 Str. 23-32 no. 1 Vol. 69 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 0351-3386 10.14502/tekstilec.69.2024154 304307971 02-DOI_10.14502_tekstilec.69.2024154_23-32.pdf 02-DOI_10.14502_tekstilec.69.2024154_23-32.pdf 1 DF54CE10D1DC4F7A191EADC0D0E66068 ad890b92b1693c662ad2e665f9f4437ec37fac5bfaab02b97a2d859f72fb67c3 278f0c48-da17-11f1-aea2-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=252712 https://journals.uni-lj.si/tekstilec/article/view/21440 1 e6715612-da16-11f1-aea2-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=252711 Naravoslovnotehniška fakulteta 0 0 0