Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-10T21:07:58Z No. of bitstreams: 1 BrennoHenriqueSilvaFelipe_DISSERT.pdf: 3323797 bytes, checksum: c0441882551b254732cc3dec33b910be (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-12T22:52:21Z (GMT) No. of bitstreams: 1 BrennoHenriqueSilvaFelipe_DISSERT.pdf: 3323797 bytes, checksum: c0441882551b254732cc3dec33b910be (MD5) / Made available in DSpace on 2016-05-12T22:52:21Z (GMT). No. of bitstreams: 1 BrennoHenriqueSilvaFelipe_DISSERT.pdf: 3323797 bytes, checksum: c0441882551b254732cc3dec33b910be (MD5) Previous issue date: 2015-02-19 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O presente projeto visa a s?ntese e caracteriza??o de um nanorevestimento de di?xido de tit?nio dopado com prata em tecido de poli?ster arom?tico, a fim de desenvolver um material t?xtil funcional com aplica??oself-cleaning. Uma t?cnica de deposi??o f?sica de vapor (PVD) foi utilizada como m?todo de s?ntese. A sele??o do material suporte e a t?cnica utilizada na obten??o dos nanorevestimentos s?o vari?veis que podem influenciar nas suas propriedades funcionais, homogeneidade e ades?o. As fibras t?xteis s?o materiais muito empregados como substrato por possu?rem uma maior flexibilidade, serem facilmente adapt?veis a qualquer geometria e baixo custo. A presen?a de Ag e TiO2, bem como sua cristalinidade, foi comprovada atrav?s das an?lises de difra??o de raios X (DRX), espectroscopia fotoeletr?nica de raios-X (XPS) e fluoresc?ncia de raios-x (FRX). A morfologia de superf?cie foi avaliada atrav?s das t?cnicas de microscopia de for?a at?mica (AFM) e microscopia eletr?nica de varredura (MEV). A efici?ncia da atividade fotocatal?tica do material foi comprovada pela descolora??o do corante acid blue 113 em meio a fontes de radia??o UV, com uso da t?cnica de espectroscopia de absor??o (96%). A degrada??o da mol?cula do corante acid blue 113 foi confirmada atrav?s da t?cnica de espectroscopia de infravermelho por transformada de Fourier (FTIR). O car?ter hidrof?bico do nanorevestimento foi confirmado atrav?s da t?cnica de medida de ?ngulo de contato. O car?ter anti UV foi confirmado foi confirmado de acordo com a metodologia normativa AS/NZS 4399:1996. Os resultados comprovam que o material desenvolvido apresenta uma alta capacidade autolimpante, bem como protetora UV. / Innovative methods in the textile segment is currently responsible for increase in production processes, development of new materials and add new technologies in an area that was one of the major participants in the industry revolution. Thus, much research has been responsible for putting the textile industry in the new era of technological revolution watching so, the dynamism of microelectronics companies, food, and mechanics, among others. To this end, this PhD project aims to add value research involving new textile materials. Thus, this project aims to make the synthesis and characterization of a silver doped titanium dioxide nanocoating on polyester fabric in order to develop a functional textile material with self-cleaning application. A physical vapor deposition technique (PVD) was used as the method of synthesis. The selection of the support material and the technique used in obtaining the nanocoatings are variables that can influence their functional properties, uniformity and adhesion. The textile fibers are materials used as substrate by having greater flexibility to be easily adaptable to any geometry and low cost. The efficiency of the photocatalytic activity of the material was confirmed by discoloration of the dye Acid Blue 113 through UV radiation sources, using absorption spectroscopy (96%). The presence of Ag and TiO2 was confirmed by analysis of X-ray diffraction (XRD) photoelectron spectroscopy X-ray (XPS) and x-ray fluorescence (XRF). The surface morphology was evaluated through the techniques of atomic force microscopy (AFM) and scanning electron microscopy (SEM). Degradation of Acid Blue 113 dye molecule was confirmed by infrared spectroscopy Fourier transform (FTIR). The hydrophobic character of nanocoating was confirmed by contact angle measurement technique. The results show that the developed material has a high capacity self-cleaning pro perties