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Abstract In the present time, the production of fabrics with new properties and applications has received great attention. Higher conductivity considers as the main requirement for producing electronic and smart textiles used in different applications such as military, medical, sports, sensors, etc. The objective of this work aims to study the effect of treated the surfaces of cotton and silk fabrics with a several materials with characteristic electrical, mechanical and thermal properties, such as carbon nanotubes, polyaniline, and graphene oxide, titanium oxide, doped titanium oxide with some important metals such as iron, silver and its composites with graphene oxide. This to enhance the antimicrobial activity, electrochemical performance and the adsorption activity of the treated fabrics This thesis consists of six chapters: Chapter 1 deals with a general introduction of the subject and literatures survey. Chapter 2 concerns theoretical review and calculation methods used for analyzing the results of dc-, ac-conductivity, dielectric constant (ε`), dielectric loss (ε``) and complex impedance (Z’), calculation of particle size, calculation of supercapacitors parameters and kinetic parameters of adsorption process. In chapter 3 includes the materials used, fabrication methods of graphene oxide, polyaniline, titanium dioxide, titanium doped silver and ferric, and the different kinds of composites based on graphene oxide prepared by different methods on cotton and silk textile. This chapter includes also experimental procedures and techniques that are used for samples characterization including X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), Photoluminscence spectroscopy (PL), Thermal gravimetric analysis (TGA), in addition to measurements of durability, tensile properties, heat generation capacity measurements, adsorption and antimicrobial activity. The conducting and electrochemical properties were measured by means of electrochemical impedance spectroscopy (EIS), cyclic voltammetric (CV) and galvanostatic charge-discharge (GCD) techniques. Chapter 4 deals with the results and discussions of the details of coating of cotton fabric by graphene oxide, polyaniline, carbon nanotube, and their composites (PANI@GO-Cot, PANI@GO@CNT-Cot). The electrochemical properties of fabrics were discussed to use as a supercapacitors. Chapter 5 deals with the results and discussions of the details of coating of silk fabric by graphene oxide, polyaniline and composites of (PANI@GO-SL). In addition, their unprecedented supercapacitance efficiencies and antimicrobial activity were discussed. Chapter 6 deals with the results and discussions of the investigated materials on cotton and silk fabrics after coating them by titanium dioxide (TiO2), titanium doped (Ag, Fe), composite of (TiO2,GO) and composite of (GO, TiO2-Ag, TiO2-Fe). Their adsorption activity and antimicrobial activity were discussed. |