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Antimicrobial activity of 3d-printed acrylonitrile butadiene styrene (Abs) polymer-coated with silver nanoparticles
3D printing; Acrylonitrile butadiene styrene; Antibacterial; Antifungal; Multi-drug resistant; Silver nanoparticles 3D printers; ABS resins; Acetone; Drug delivery; Escherichia coli; Functional polymers; Metal nanoparticles; Plastic coatings; Styrene; 3-D printing; 3D-printing; Acrylonitrile-butadiene-styrene; Anti-microbial properties; Antibacterials; Antifungals; Baumannii; Medical Devices; Microbial strain; Multi-drug resistant; Silver nanoparticles
Medical devices with antimicrobial properties are a potential long-term solution to the high rate of multi-drug-resistant healthcare-associated infections. Silver nanoparticles (AgNPs) are an established agent for effectively eliminating a wide range of microbial strains. AgNPs have been commonly incorporated into traditional plastic materials; however, recently, there has been increased interest in using AgNPs combined with 3D-printing technology for medical devices due to the accessibility and customizability of 3D-printed products. This study reports a novel method of utilizing acetone to partially dissolve 3D-printed polymer acrylonitrile butadiene styrene (ABS) plastic to attach a layer of AgNPs. The antimicrobial properties of this AgNP-coated surface were tested against several microbial strains prevalent in healthcare-associated infections. AgNP-coated ABS (AgNP-ABS) plastic demonstrated significant elimination of viable bacteria within 4 h for all tested bacterial species (Acinetobacter baumannii, non-pathogenic and pathogenic Escherichia coli, Pseudomonas aeruginosa, and methicillin-resistant Staphylococcus aureus) and within 19 h for the tested fungus Candida albicans. The longevity of adhesion of AgNPs to the ABS plastic was assessed by checking antibacterial activity against A. baumannii after repeat use cycles. AgNP-ABS plastic showed decreased antibacterial efficacy with repeated use but maintained the ability to eliminate microbes within 3 h for up to eight use cycles. The AgNP-coated ABS plastic showed efficacy as an antimicrobial surface, and future studies will consider its applicability in the production of medical devices. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
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