Naslov
Mercerization of Cotton for the New Properties

Autori
Grancarić, Anamarija ; Pušić, Tanja ; Soljačić, Ivo

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

Izvornik
Proceedings of 225th ACS National Meeting / Goheen, Steven C. - New Orleans (LA) : ACS Organisation, 2003, 200-205

Skup
225th ACS National Meeting

Mjesto i datum
New Orleans (LA), Sjedinjene Američke Države, 23.03.2003. - 27.03.2003

Vrsta sudjelovanja
Ostalo

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cotton yarn; mercerization; cationization

Sažetak
In teh wet textile finishing there are many processes dependent on the adsorption properties of textile fibers. It is the first important unit in the application of chemicals on textile materials. it is well known the law adsorption of anionic charged compound on the anionic cotton surface as the consequence of the repulsion of the same charged ion occured in the wet processes. For such reason a large amount of electrolytes is usually needed in the dyebath to overcome this barrier and achieves the sufficient affinity to the cotton. Mercerization increses chemical reactivity of cotton because the hydroxyl groups of cellulose molecules are more accesible. Mercerization additionally results in the changes of negative zeta potential of fiber surface. Regardless of whether mercerizing is done or not the addition of electrolyte in dyeing procedure is needed. This paper is focused on the improved the cotton-anionic compounds interaction by treating the cotton yarns with etoxylated cationic surfactant. The anionic compound applied was anionic charged stylbene derivate fluorescent whitening agents (FWA). For this purpose cotton yarns were mercerized and bleached what was followed by optical bleaching. The mercerization processes were carried in 15 %, 20 % and 24 5 of sodium hydroxide solutions. In the hot rinsing instead of water the solution of short chain etoxylated cationic surfactant was added. The effect of mercerization degree was measured by adsorption of barium hydroxyde expressed as Ba-number. the fluorescence intensity of FWA effect measured using fluorometer and zeta potential of the yarns was measured by streaming current method using Brookhaven-Paar electrokinetic analyzer (EKA) with a cell appropriate for textile fibres.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA