Proposing an Affordable Plasma Device for Polymer Surface Modification and Microbial Inactivation

This study proposes an affordable plasma device that utilizes a parallel-plate dielectric barrier discharge geometry with a metallic mesh electrode, featuring a straightforward 3D-printed design. Powered by a high-voltage supply adapted from a cosmetic plasma device, it operates on atmospheric air,...

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Bibliographic Details
Authors: Chiappim, William [UNESP], Kodaira, Felipe Vicente de Paula [UNESP], Castro, Gisele Fátima Soares de [UNESP], Silva, Diego Morais da [UNESP], Tavares, Thayna Fernandes [UNESP], Almeida, Ana Carla de Paula Leite [UNESP], Leal, Bruno Henrique Silva [UNESP], Quade, Antje, Koga-Ito, Cristiane Yumi [UNESP], Kostov, Konstantin Georgiev [UNESP]
Format: article
Status:Published version
Publication Date:2024
Country:Brasil
Institution:Universidade Estadual Paulista (UNESP)
Repository:Repositório Institucional da UNESP
Language:English
OAI Identifier:oai:repositorio.unesp.br:11449/298018
Online Access:http://dx.doi.org/10.3390/molecules29174270
https://hdl.handle.net/11449/298018
Access Level:Open access
Keyword:affordable cost
antimicrobial effects
Candida albicans
cold atmospheric plasma
cytotoxicity
dielectric barrier discharge
polyethylene
polymer surface modification
Staphylococcus aureus
Vero cell
Description
Summary:This study proposes an affordable plasma device that utilizes a parallel-plate dielectric barrier discharge geometry with a metallic mesh electrode, featuring a straightforward 3D-printed design. Powered by a high-voltage supply adapted from a cosmetic plasma device, it operates on atmospheric air, eliminating the need for gas flux. Surface modification of polyethylene treated with this device was characterized and showed that the elemental composition after 15 min of plasma treatment decreased the amount of C to ~80 at% due to the insertion of O (~15 at%). Tested against Candida albicans and Staphylococcus aureus, the device achieved a reduction of over 99% in microbial load with exposure times ranging from 1 to 10 min. Simultaneously, the Vero cell viability remained consistently high, namely between 91% and 96% across exposure times. These results highlight this device’s potential for the surface modification of materials and various infection-related applications, boasting affordability and facilitating effective antimicrobial interventions.

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