Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/72234

TitleApplication of Dielectric Barrier Discharge (DBD) atmospheric pressure plasma for pretreatment of medical textiles
Author(s)Pinheiro, I.
Padrão, Jorge
Silva, C.
Ribeiro, A. Fernando
Bouça, V.
Coelho, L.
Carvalho, A.
Moura, B.
Ribeiro, Ana Isabel Ferreira
Felgueiras, Helena Prado
Souto, António Pedro Sousa Glória Valadares
Zille, Andrea
KeywordsPlasma
DBD
Textile
Medical textile
Issue date2021
Abstract(s)Conventional pretreatment by wet chemistry and/or low-pressure plasma have several drawbacks [1]. Atmospheric plasma is an alternative and cost-competitive method to low-pressure plasma and wet chemical pretreatments, allowing continuous and uniform processing of fibers, substrates and films surfaces, improving its functionalization performance [2]. This technology has been studied in the field of the R&D project - PLASMAMED. The main objective of this project is to produce a new generation of coatings containing nanoparticles (NPs) and enzybiotics, with controllable antibacterial activity, on medical textiles, with special emphasis in antimicrobial dressing for pressure injury and hernia meshes. To achieve this goal, a dielectric barrier discharge (DBD) atmospheric pressure plasma was used as a pretreatment sustainable alternative. In this sense, medical-grade 100% polyester (PES) fabrics were pretreated by atmospheric plasma technology, where various processing conditions were tested. Different treatment speeds and discharges powers were tested, as well as the application of various gases (such as helium, oxygen and nitrogen) and a corona treatment (air), with a carrier gas (argon). The characterization of these pretreated textiles was carried out by contact angle (CA), through the sessile drop technique, with 3 µL water droplets on the surface of the textile. In general, contact angles exhibit a significant decrease (between 40º and 60º for all studied gases), when compared with the standard values for substrate without treatment (around 120º). Therefore, plasma pretreatment significantly improved the hydrophilicity of these fabrics (Figure 1), which reveals to be an advantage for the further functionalization steps
TypeOral presentation
URIhttps://hdl.handle.net/1822/72234
Peer-Reviewedyes
AccessOpen access
Appears in Collections:DET/2C2T - Comunicações em congressos internacionais com arbitragem científica

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