Plasma treatment of polyamide fabric surface by hybrid corona-dielectric barrier discharge: Material characterization and dyeing/washing processes

• Autor(a) principal: Gasi, Fernando
• Data de Publicação: 2020
• Outros Autores: Petraconi, Gilberto, Bittencourt, Edison, Lourenço, Sérgio Ricardo, Castro, Alonso Hernan Ricci, De Souza Miranda, Felipe, Essiptchouk, Alexei Mikhailovich [UNESP], Nascimento, Larissa, Petraconi, André, Fraga, Mariana Amorim, Pessoa, Rodrigo Savio
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/1980-5373-MR-2019-0255; http://hdl.handle.net/11449/198821
• topic: Corona; Dielectric barrier discharge; Polyamide; Surface treatment; Textile

In this study, the hybrid corona-dielectric barrier discharge plasma treatment was employed to modify the physical, chemical and morphological characteristics of a half-knitted fabric composed of 92% polyamide 6.6 and 8% elastane (PA). These properties of the fabric were evaluated by the water contact angle, x-ray diffraction, infrared spectroscopy, scanning electron microscopy and atomic force microscopy techniques. In addition, the dyeing and washing processes were also investigated. A significant reduction of the contact angle was observed for plasma-treated PA. Infrared spectroscopy analyses indicated that C-H, N-H, and N-O groups in PA increased after plasma treatment, explaining the improved coloring strength for the plasma-treated samples when dyed with reactive and acid dyes. A better fixation of dye was also observed after the atmospheric plasma treatment. Furthermore, dyeing with a basic and acid dye caused the dyeability increases for the plasma-treated sample compared with the untreated sample.