This work consists to provide a functionalization of textile surfaces by the sol-gel process using alcoxysilanes. The final aim is to impart water repellent, flame retardant and fluorescent features to textile surfaces. Firstly, the effects of synthesis parameters such as the concentration of the alcoxysilanes and the impregnation time of the fabrics in the solution (sol) prepared have been thoroughly investigated. Then, we have prepared a silica modified sol which is expected to induce a water repellent feature to textile. To investigate the water repellency under practical conditions, the common “rain test” was used according to AATCC test method 22-2005 also mechanical properties of treated un untreated textile was studied according to ISO 13934. Furthermore, thermal properties of sol-gel modified textiles were investigated and their water repellency abilities were assessed and compared after photo ageing upon UV irradiations.Secondly, we have showed that the immobilization of ionic liquids onto the surface of textile fabrics can be achieved by the sol-gel process, which is of a growing interest due to its simplicity and flexibility. For this aim, two ionic liquids were synthesized using halogenated alkoxysilane, and then grafted onto the cotton fabrics by sol- gel process .The functionalized cotton fabrics exhibit good water repellency and flame stability. Finally, a fluorophores bearing phenolic hydroxyl and pyridinium end groups have been synthesized and grafted into cellulosic fiber by sol -gel process. This fluorophores have been firstly synthesized by double Heck couplings, and then we have studied their photo physical behavior as function of their concentration both in ethanol and in the textile. We have also grafted the fluorophores in cellulosic textile by sol gel method to have fluorescent and PH-sensitive properties.
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