FUNCTIONALISATION OF TEXTILE FABRICS WITH STABILIZED TiO2 DISPERSIONS

This study approached the experimentation of deposition by padding of some TiO2 P25 dispersed photocatalytic systems on RIPSTOP fabric, made of 100% cotton yarns Nm 70/1 and a network of polyester filament yarns 330 dtex, both in warp and weft directions. As stabilizers for photocatalytic dispersion...

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Bibliographic Details
Main Authors: POPESCU Alina, CHIRILA Laura
Format: Article
Language:English
Published: Editura Universităţii din Oradea 2016-05-01
Series:Annals of the University of Oradea: Fascicle of Textiles, Leatherwork
Subjects:
SEM
EDX
Online Access:http://textile.webhost.uoradea.ro/Annals/Vol%20XVII-No%201-2016/Textile/Art.nr.146-pag.%20101-106.pdf
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Summary:This study approached the experimentation of deposition by padding of some TiO2 P25 dispersed photocatalytic systems on RIPSTOP fabric, made of 100% cotton yarns Nm 70/1 and a network of polyester filament yarns 330 dtex, both in warp and weft directions. As stabilizers for photocatalytic dispersions the following products have been used: dodecyltrimethylamonnium bromide (DTAB), 2-[2-(2-methoxyethoxy)ethoxy] acetic acid (TODA) and poly(ethylene)glycol (PEG). Prior to functionalisation treatment, preliminary preparation in three successive steps were applied on textile materials (enzymatic desizing, hot alkaline treatment and bleaching), being followed by cationisation with a polyethylene polyamine resin or a pre-treatment with different crosslinking agents based on acrylic copolymer, polycarbonate urethane polymer or urethane resin. The photocatalytic activity of the textile materials treated with synthesized dispersions was investigated using methylene blue as pollutant. The evaluation was made before and after one washing cycle, in order to determine the durability to washing of applied treatments. Electron microscopy was used for viewing the distribution of TiO2 particles on the surface of textile materials treated with the photocatalytic dispersions. Ti content existing on the surface of the textile materials was performed by energy dispersive X-ray spectroscopy. The sample treated with photocatalytic dispersion stabilized with TODA showed the higher photocatalytic activity, for which the greatest degree of discoloration was achieved after six hours UV irradiation. Pre-treatment with crosslinking type urethane resin offers good durability to washing of photocatalytic dispersions stabilized with TODA and PEG, confirmed by obtaining a discoloration after washing comparable to that obtained for the unwashed sample.
ISSN:1843-813X