Costa, Thercio Henrique De CarvalhoBenevides, Wanlídia Fernandes de Araújo2024-03-072024-03-072023-10-27BENEVIDES, Wanlídia Fernandes de Araújo. Funcionalização hidrofóbica em tecidos de poliéster por Deposição Química de Vapor Auxiliada por Plasma (PECVD) . 2023. 68 f. Dissertação (Mestrado em Engenharia Têxtil) - Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, 2023.https://repositorio.ufrn.br/handle/123456789/57818Cold plasma, an ionized mixture of gases with a temperature close to room temperature, can be safely used for surface treatments on textile substrates. Plasma treatment can modify textile surfaces, forming hydrophobic coatings and providing self-cleaning properties. Polyester textiles, by nature, have hydrophobic properties. Therefore, with the aim of further improving this characteristic of the polyester textile substrate, a treatment was carried out on its surface using the Plasma-Assisted Chemical Vapor Deposition (PECVD) technique, which was applied using acetylene (C2H2) and a mixture of acetylene (C2H2) and xylene (C8H10), for both compositions times of 10, 15, 20 and 60 minutes were evaluated. The results were evaluated using different experimental techniques, such as water and oil contact angle measurements, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), x-ray diffraction analysis (XRD), and analysis by RAMAN spectroscopy. The results obtained indicated that there was polymerization on the surface of the fabric, creating a film composed of chemical groups with non-polar characteristics, rich in hydrocarbons, which were responsible for attributing hydrophobic functionalities to the polyester samplesAcesso AbertoPECVDDeposição a plasmaHidrofóbicoOleofílicoPolyester fabricsHydrophobicXylene and acetyleneXylene and acetylenemasterThesis