Plasma Treatment of Polyamide Fabric Surface by Hybrid Corona-Dielectric Barrier Discharge: Material Characterization and Dyeing/Washing Processes

• Published in: Materials research (São Carlos, São Paulo, Brazil) Vol. 23; no. 1; p. 1
• Main Authors: Gasi, Fernando, Petraconi, Gilberto, Bittencourt, Edison, Lourenço, Sérgio Ricardo, Castro, Alonso Hernan Ricci, Miranda, Felipe de Souza, Essiptchouk, Alexei Mikhailovich, Nascimento, Larissa, Petraconi, André, Fraga, Mariana Amorim, Pessoa, Rodrigo Savio
• Format: Journal Article
• Language: English
• Published: Sao Carlos Universidade Federal do Sao Carlos, Departamento de Engenharia de Materiais 01.01.2020
• Subjects: Acid dyes; Atomic force microscopy; Contact angle; Dielectric barrier discharge; Dyeing; Infrared analysis; Infrared spectroscopy; Microscopy; Plasma; Polyamide resins; Spectrum analysis; Washing
• ISSN: 1516-1439; 1980-5373
• DOI: 10.1590/1980-5373-mr-2019-0255.

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.