During the presented study, colloidal suspensions containing anatase TiO2 nanoparticles were applied onto the polyester fabric (PES) according to pad-dry-cure procedure. The type and the concentration of suspensions were varied as well as the operational parameters, i.e. curing time and temperature. The morphological structures of the prepared pastes as well as nano-modified PES fabrics were characterized by scanning electron microscopy (SEM). Furthermore, the photocatalytic activity of used TiO2 nanoparticles deposited on the fabric was followed by a discolouration of two coloured stains, i.e. red wine and red beet, under two UV source of irradiation (photoreactor with 8 UV lamps - 4 UVA and 4 UVB and direct day light exposure) in different time intervals by means of colour measurement. The obtained results show acceptable self-cleaning ability of TiO2 modified PES fabrics governed by the reactants concentration and exposure time.
COBISS.SI-ID: 16343318
Small angle X-ray scattering (SAXS) is employed to characterize the inner structure and shape of aqueous nanocrystalline cellulose suspensions using the generalized indirect Fourier transformation (GIFT). The use of the GIFT approach provides a single fitting procedure for the determination of intra- and interparticle interactions due to a simultaneous treatment of the form factor P(q) and the structure factor S(q). Moreover, GIFT allows for the determination of particle charges and polydispersity indices. As test material, aqueous nanocrystalline cellulose suspensions (aNCS) prepared by the H2SO4 route have been investigated and characterized (SAXS, dynamic light scattering, zeta potential).
COBISS.SI-ID: 16700438