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Open AccessArticle

Antimicrobial Properties of Diamond-Like Carbon/Silver Nanocomposite Thin Films Deposited on Textiles: Towards Smart Bandages

1
Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, 51423 Kaunas, Lithuania
2
Veterinary Academy, Lithuanian University of Health Sciences, Tilžės St. 18, 47181 Kaunas, Lithuania
3
Department of Physics, Kaunas University of Technology, Studentų St. 50, 51368 Kaunas, Lithuania
*
Author to whom correspondence should be addressed.
Academic Editor: Mauro Pollini
Materials 2016, 9(5), 371; https://doi.org/10.3390/ma9050371
Received: 31 March 2016 / Revised: 9 May 2016 / Accepted: 10 May 2016 / Published: 13 May 2016
(This article belongs to the Special Issue Advances and Applications of Nano-antimicrobial Treatments)
In the current work, a new antibacterial bandage was proposed where diamond-like carbon with silver nanoparticle (DLC:Ag)-coated synthetic silk tissue was used as a building block. The DLC:Ag structure, the dimensions of nanoparticles, the silver concentration and the silver ion release were studied systematically employing scanning electron microscopy, energy dispersive X-ray spectroscopy and atomic absorption spectroscopy, respectively. Antimicrobial properties were investigated using microbiological tests (disk diffusion method and spread-plate technique). The DLC:Ag layer was stabilized on the surface of the bandage using a thin layer of medical grade gelatin and cellulose. Four different strains of Staphylococcus aureus extracted from humans’ and animals’ infected wounds were used. It is demonstrated that the efficiency of the Ag+ ion release to the aqueous media can be increased by further RF oxygen plasma etching of the nanocomposite. It was obtained that the best antibacterial properties were demonstrated by the plasma-processed DLC:Ag layer having a 3.12 at % Ag surface concentration with the dominating linear dimensions of nanoparticles being 23.7 nm. An extra protective layer made from cellulose and gelatin with agar contributed to the accumulation and efficient release of silver ions to the aqueous media, increasing bandage antimicrobial efficiency up to 50% as compared to the single DLC:Ag layer on textile. View Full-Text
Keywords: nanocomposite; silver; bandage; antimicrobial; S. aureus nanocomposite; silver; bandage; antimicrobial; S. aureus
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Juknius, T.; Ružauskas, M.; Tamulevičius, T.; Šiugždinienė, R.; Juknienė, I.; Vasiliauskas, A.; Jurkevičiūtė, A.; Tamulevičius, S. Antimicrobial Properties of Diamond-Like Carbon/Silver Nanocomposite Thin Films Deposited on Textiles: Towards Smart Bandages. Materials 2016, 9, 371.

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