Naslov
ELECTROKINETIC PHENOMENA OF 3-AMINOPROPYLTRIETHOXYSILANE-BASED COTTON FINISHING

Autori
Grancarić, Anamarija ; Rosace, Giuseppe ; Tarbuk, Anita ; Colleoni, Claudio

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts of 24th International IFATCC Congress / - Pardubice, 2016, 71-1

Skup
24th International IFATCC Congress

Mjesto i datum
Pardubice, Češka Republika, 13.06.2016. - 16.06.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cotton, APTES, zeta potential, surface charge

Sažetak
The textiles are characterized by their inner and outer structure and functional groups. Specific adsorption of ions or dissociation of the surface groups in aqueous solution result in their urface charge. Changing the number of functional fiber surface groups, e.g. by blocking in dyeing and finishing processes, and their dissociation affect the distribution of surface charge, as well as the thickness and distribution of the electric double layer which results in different fabric electrokinetic phenomena. Immersed in water (pH 6.5-7.0) cotton fibers, like most textile fibers, are negatively charged in neutral and alkali aqueous solutions. Therefore, the adsorption of textile auxiliaries, dyestuffs, optical brighteners and finishing agents is difficult due to repulsive forces. Cationisation, as an alternative method for improving dyestuff and surfactant adsorption, increases cotton zeta potential and changes the fiber surface charge. In the last years, the sol-gel technique has remarkably proved its exceptional potential regarding the functionalization of textile fabrics. Sol-gel solution leads to the formation of completely inorganic or hybrid (organic-inorganic) coatings that can be used to confer functional properties, such as antimicrobial, water repellency and flame retardancy. In this study 3-Aminopropyltriethoxysilane (APTES) has been selected for the cationisation of cellulose due to the presence of amine groups into polysilane network.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA