Synthesis and in-vitro antibacterial properties of a functionally graded Ag impregnated composite surface

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Synthesis and in-vitro antibacterial properties of a functionally graded Ag impregnated composite surface. / Ji, Xiaochao; Li, Xiaoying; Dong, Yangchun; Sammons, Rachel; Tian, Linhai; Yu, Helong; Zhang, Wei; Dong, Hanshan.

In: Materials Science and Engineering C, Vol. 99, 01.06.2019, p. 150-158.

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@article{0d9b930a819d456c8940491e76ac8ce2,
title = "Synthesis and in-vitro antibacterial properties of a functionally graded Ag impregnated composite surface",
abstract = "Silver is considered promising in medical devices to prevent infection due to its excellent properties of broad antibacterial spectrum and persistent antibacterial activity. Herein, silver impregnated functionally graded composite surfaces have been developed by a novel duplex plasma deposition technique, which combines the double glow sputtering process and active screen plasma nitriding process. The composite surfaces include a surface antibacterial layer and a bottom supporting layer, which are deposited simultaneously. The functionally graded structure endows the composite surfaces with antibacterial activity, combined with improved wear resistance. The multilayer structures were observed by scanning electron microscopy, and the graded distribution of silver and nitrogen was verified by glow discharge optical emission spectroscopy. X-ray diffraction and X-ray photoelectron spectroscopy were used to analyze the microstructures and chemical states of the components. Results from physical properties tests indicated that the composite surfaces have increased hardness, lower contact angles, excellent scratch resistance and wear resistance. The in-vitro antibacterial tests using the Gram-negative E. Coli. NCTC 10418 also showed that over 99% of bacteria were killed after 5h contacting with the composite surface.",
keywords = "Active screen, Antibacterial activity, Functionally graded coating, Nitriding, Silver, Stainless steel",
author = "Xiaochao Ji and Xiaoying Li and Yangchun Dong and Rachel Sammons and Linhai Tian and Helong Yu and Wei Zhang and Hanshan Dong",
year = "2019",
month = jun,
day = "1",
doi = "10.1016/j.msec.2019.01.087",
language = "English",
volume = "99",
pages = "150--158",
journal = "Materials Science and Engineering C",
issn = "0928-4931",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Synthesis and in-vitro antibacterial properties of a functionally graded Ag impregnated composite surface

AU - Ji, Xiaochao

AU - Li, Xiaoying

AU - Dong, Yangchun

AU - Sammons, Rachel

AU - Tian, Linhai

AU - Yu, Helong

AU - Zhang, Wei

AU - Dong, Hanshan

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Silver is considered promising in medical devices to prevent infection due to its excellent properties of broad antibacterial spectrum and persistent antibacterial activity. Herein, silver impregnated functionally graded composite surfaces have been developed by a novel duplex plasma deposition technique, which combines the double glow sputtering process and active screen plasma nitriding process. The composite surfaces include a surface antibacterial layer and a bottom supporting layer, which are deposited simultaneously. The functionally graded structure endows the composite surfaces with antibacterial activity, combined with improved wear resistance. The multilayer structures were observed by scanning electron microscopy, and the graded distribution of silver and nitrogen was verified by glow discharge optical emission spectroscopy. X-ray diffraction and X-ray photoelectron spectroscopy were used to analyze the microstructures and chemical states of the components. Results from physical properties tests indicated that the composite surfaces have increased hardness, lower contact angles, excellent scratch resistance and wear resistance. The in-vitro antibacterial tests using the Gram-negative E. Coli. NCTC 10418 also showed that over 99% of bacteria were killed after 5h contacting with the composite surface.

AB - Silver is considered promising in medical devices to prevent infection due to its excellent properties of broad antibacterial spectrum and persistent antibacterial activity. Herein, silver impregnated functionally graded composite surfaces have been developed by a novel duplex plasma deposition technique, which combines the double glow sputtering process and active screen plasma nitriding process. The composite surfaces include a surface antibacterial layer and a bottom supporting layer, which are deposited simultaneously. The functionally graded structure endows the composite surfaces with antibacterial activity, combined with improved wear resistance. The multilayer structures were observed by scanning electron microscopy, and the graded distribution of silver and nitrogen was verified by glow discharge optical emission spectroscopy. X-ray diffraction and X-ray photoelectron spectroscopy were used to analyze the microstructures and chemical states of the components. Results from physical properties tests indicated that the composite surfaces have increased hardness, lower contact angles, excellent scratch resistance and wear resistance. The in-vitro antibacterial tests using the Gram-negative E. Coli. NCTC 10418 also showed that over 99% of bacteria were killed after 5h contacting with the composite surface.

KW - Active screen

KW - Antibacterial activity

KW - Functionally graded coating

KW - Nitriding

KW - Silver

KW - Stainless steel

UR - http://www.scopus.com/inward/record.url?scp=85060552202&partnerID=8YFLogxK

U2 - 10.1016/j.msec.2019.01.087

DO - 10.1016/j.msec.2019.01.087

M3 - Article

VL - 99

SP - 150

EP - 158

JO - Materials Science and Engineering C

JF - Materials Science and Engineering C

SN - 0928-4931

ER -