Incorporation of silver nanoparticles into magnetron-sputtered calcium phosphate layers on titanium as an antibacterial coating

Incorporation of silver nanoparticles into magnetron-sputtered calcium phosphate layers on titanium as an antibacterial coating

Bibliografiske detaljer
Parent link:Colloids and Surfaces B: Biointerfaces: Scientific Journal
Vol. 156.— 2017.— [P. 104–113]
Institution som forfatter: Национальный исследовательский Томский политехнический университет (ТПУ) Физико-технический институт (ФТИ) Кафедра теоретической и экспериментальной физики (ТиЭФ) Центр технологий (ЦТ)
Andre forfattere: Surmeneva M. A. Maria Alexandrovna, Sharonova A. A. Anna Aleksandrovna, Chernousova S., Prymak O., Loza К., Tkachev М. S., Shulepov I. A. Ivan Anisimovich, Epple М., Surmenev R. A. Roman Anatolievich
Summary:Title screen
A three-layer system of nanocrystalline hydroxyapatite (first layer; 1000nm thick), silver nanoparticles (second layer; 1.5μg Ag cm -2) and calcium phosphate (third layer, either 150 or 1000nm thick) on titanium was prepared by a combination of electrophoretic deposition of silver nanoparticles and the deposition of calcium phosphate by radio frequency magnetron sputtering. Scanning electron microscopy showed that the silver nanoparticles were evenly distributed over the surface. The adhesion of multilayered coating on the substrate was evaluated using the scratch test method. The resistance to cracking and delamination indicated that the multilayered coating has good resistance to contact damage. The release of silver ions from the hydroxyapatite/silver nanoparticle/calcium phosphate system into the phosphate-buffered saline (PBS) solution was measured by atomic absorption spectroscopy (AAS). Approximately one-third of the incorporated silver was released after 3days immersion into PBS, indicating a total release time of the order of weeks. There were no signs of cracks on the surface of the coating after immersion after various periods, indicating the excellent mechanical stability of the multilayered coating in the physiological environment. An antimicrobial effect against Escherichia coli was found for a 150nm thick outer layer of the calcium phosphate using a semi-quantitative turbidity test.
Режим доступа: по договору с организацией-держателем ресурса
Udgivet: 2017
Fag:
электронный ресурс
труды учёных ТПУ
антибактериальные покрытия
фосфат кальция
покрытия
распыление
Online adgang:https://doi.org/10.1016/j.colsurfb.2017.05.016
Format: Electronisk Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655086

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