In situ synthesis and hydrothermal crystallization of nanoanatase TiO₂–SiO₂ coating on aramid fabric (HTiSiAF) for UV protection

Abstract

TiO2 -SiO2 thin film was prepared by sol-gel method and coated on the aramid fabric to prepare functional textiles. The aramid fabric was dipped and withdrawn in TiO2 -SiO2 gel and hydrothermal crystallization at 80(°) C, then its UV protection functionality was evaluated. The crystalline phase and the surface morphology of TiO2 -SiO2 thin film were characterized using SEM, XRD, and AFM respectively. SEM showed hydrothermal crystallization led to a homogeneous dispersion of anatase nonocrystal in TiO2 -SiO2 film, and XRD suggested the mean particle size of the formed anatase TiO2 was less than 30 nm. AFM indicated that hydrothermal treatment enhanced the crystallization of TiO2 . UV protection analysis suggested that the hydrothermally treated coated textile had a better screening property in comparison with TiO2 -SiO2 gel and native aramid fabric.

Immobilization of Titanium(IV) Oxide onto 3D Spongin Scaffolds of Marine Sponge Origin According to Extreme Biomimetics Principles for Removal of C.I. Basic Blue 9

“…The fact that TiO 2 is extensively used in that field also results from its non-toxicity, and both physicochemical and thermal stability. Due to a series of reduction and oxidation reactions occurring during photocatalysis under UV light, titania nanoparticles have been found to be useful in the removal of water pollutants [29,30,31] and air contaminants [32,33,34], surface self-cleaning [35,36,37], antimicrobial applications [37,38,39], and UV protection [40,41,42]. In addition to its photocatalytic activity, TiO 2 is used as powerful catalyst support due to its possible strong metal support interaction (SMSI) [43] and its feasibility of enabling spill-over effects [44].…”

Simultaneous reactive dyeing and surface modification of polyamide fabric with TiO2 precursor finish using a one-step hydrothermal process

“…30&34 The influences of TiO 2 quantity on nylon&6 granules and yarns properties has been investigated. 35 Besides, TiO 2 finishing has been applied to cotton, 36 linen, 37 silk, 38 wool, 39 viscose, 40 aramid, 41 polyester, 42 and polyester/wool blended 43 fabrics by pad&dry&cure process to prepare functional textiles.…”

“…30–34 The influences of TiO 2 quantity on nylon-6 granules and yarn properties has been investigated. 35 Also, TiO 2 finishing has been applied to cotton, 36 linen, 37 silk, 38 wool, 39 viscose, 40 aramid, 41 polyester 42 and polyester/wool blended 43 fabrics by the pad–dry–cure process to prepare functional textiles. However, very little has been reported on the textile technology to produce the dyed and TiO 2 -modified textile fabrics in a single-step process.…”

A relação dos consumidores com as inovações têxteis conduzidas pela nanotecnologia

“…Nesse sentido, elas já estão disponíveis para o consumidor final (DENG;ZHANG, 2015;ZILLE et al, 2014;WINDLER;HEIGHT;NOWACK, 2013;BROASCA et al, 2013;FERREIRA, 2013;ALMEIDA et. al., 2012;ROSA E COSTA, 2012;JOSHI;BHATTACHARYYA, 2011).…”