Naslov
BIOPREPATION OF COTTON - INFLUENCE ON DYEING PROPERTIES

Autori
Grancarić, Anamarija ; Parac-Osterman, Đurđica ; Soljačić, Ivo

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
AIC Color 2002 SI, Color & Textiles, Book of Proceedings / Golob, Vera ; Jeler, Slava ; Stjepanovič, Zoran - Maribor : Slovenian Colorists Association, 2002, 240-246

Skup
AIC Color 2002 SI, Color & Textiles

Mjesto i datum
Maribor, Slovenija, 29.08.2002. - 31.08.2002

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Cotton knit fabrics; cotton pretreatment; pectinase scouring; reactive dyeing of cotton

Sažetak
Scouring of cotton removes impurities from the primary wall of cotton fibres in order to reach much more water absorptivity of cotton which is main condition for dyeing, printing and finishing. These impurities contain waxes, pectins, proteins, noncelullosic polysaccharides, inorganic compounds, lignin, coloring materials etc. that makes cotton hydrophobic. Traditional scouring with sodium hydroxide solution effectively removes impurities but has several disadvantages. Such scouring process leads to high weight loss of cotton fibers, having high-energy requirement and yield waste products. Recently biopreparation (or &#8221 ; bioscouring&#8221 ; ) of cotton was developed as an alternative scouring process using newly isolated powerful pectinase that removes impurities under slightly alkaline conditions. These pectinase are able to hydrolyze the glucosidic linkages of polygalacturonic acid into galacturonic acid monomers. With removal of polygalactironic acid the rest of pectic material and other substances from primary wall are mainly removed. Such scouring can be targeted to only the impurities with intacted cellulose structure. The objective of our paper is to investigate the influence of bioprepared and conventionally scoured cotton knit fabric on differences of reactive dyestuff yield. For such purpose dyeing processes were performed using bifunctional reactive dyestuff Bezaktiv Red S-3B by an exhaustion method. The percentages of dyebath exhaustion and fixation values were determined specrophotometrically. Color yields of cotton knit samples, in the form of K/S and CIELAB values were measured using Datacolor system.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA