Vpliv načina ekstrakcije barvila iz plodov octovca in predobdelave bombažne tkanine na njeno obarvljivost

Petrovčič, Elizabeta (author), Gorjanc, Marija (mentor)

Octovec (Rhus typhina) je tujerodna invazivna rastlina. V diplomski nalogi je bil raziskan vpliv ekstrakcije barvila iz plodov octovca in predobdelave bombažne tkanine na njeno obarvljivost. Barvilo je bilo ekstrahirano v vodi in alkoholu. Vzorci bombažne tkanine so bili pred barvanjem obdelani s kationskim sredstvom DENIMCOL FIX-OS in v sojinem mleku. Barvanje je bilo izvedeno na neobdelanih in predobdelanih vzorcih po izčrpalnem postopku pri dveh koncentracijah vsakega barvila. Na spektrofotometru so bile izmerjene barvne vrednosti obarvanih vzorcev pred in po pranju, določena je bila tudi barvna obstojnost na svetlobi in na drgnjenje. Iz rezultatov je razvidno, da barvanje z vodnim ekstraktom daje bolj žive barve kot barvanje z alkoholnim ekstraktom. Prav tako so vzorci, ki so bili pobarvani z vodnim ekstraktom, temnejši, bolj rdeči in bolj rumeni. Višja koncentracija ekstrakta povzroči temnejše, bolj rdeče in bolj rumeno obarvanje bombažne tkanine. Predobdelane tkanine so temnejše, manj rdeče in bolj rumene kot neobdelane tkanine. Obarvani vzorci so imeli slabo barvno obstojnost na pranje, dobro barvno obstojnost na svetlobi in odlično barvno obstojnost na drgnjenje.

• Language: Slovenian
• Keywords: octovec, Rhus typhina, bombaž, naravna barvila, predobdelava
• Work type: Bachelor thesis/paper
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Year: 2020
• PID: 20.500.12556/RUL-119495
• Publication date in RUL: 09.09.2020

PETROVČIČ, Elizabeta, 2020, Vpliv načina ekstrakcije barvila iz plodov octovca in predobdelave bombažne tkanine na njeno obarvljivost [online]. Bachelor’s thesis. [Accessed 3 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=119495

Secondary language

• Language: English
• Title: Influence of extraction process of dye from staghorn sumac fruit and pretreatment of cotton fabric on its dyeability

Abstract

Staghorn sumac (Rhus typhina) is an alien invasive plant. The influence of the dye extraction process from staghorn sumac fruit and the pre-treatment of cotton fabric on its dyeability was studied in the diploma thesis. The dye was extracted in water and alcohol. Samples of cotton fabric were pre-treated with the cationic agent DENIMCOL FIX-OS and soya milk. The dyeing was performed on untreated and pre-treated samples with the exhaustion method at two concentrations of each dye. The colour value of the dyed samples before and after the washing was measured with a spectrophotometer; moreover, colour fastness to light and rubbing was determined. The results show that the dyeing with water extract gives brighter colours than the dyeing with alcohol extract. Furthermore, samples dyed with water extract are darker, redder and yellower. A higher concentration of the extract causes darker, redder and yellower colouring of the cotton fabric. Pre-treated fabrics are darker, less red and yellower than untreated fabrics. Dyed samples had poor colour fastness to washing, good colour fastness to light and excellent colour fastness to rubbing.

• Keywords: staghorn sumac, Rhus typhina, cotton, natural dyes, pre-treatment