Silver Nanoparticle Conjugated Star PCL-b-AMPs Copolymer as Nanocomposite Exhibits Efficient Antibacterial Properties

2019 ◽  
Vol 31 (1) ◽  
pp. 51-63 ◽  
Author(s):  
Jian-Bin Zhen ◽  
Peng-Wei Kang ◽  
Mu-Han Zhao ◽  
Ke-Wu Yang
RSC Advances ◽  
2016 ◽  
Vol 6 (11) ◽  
pp. 8549-8562 ◽  
Author(s):  
Bo Tian ◽  
Wei Chen ◽  
Yufeng Dong ◽  
John V. Marymont ◽  
Yong Lei ◽  
...  

AgNP-HAC has the potential to be used on the surfaces of orthopedic and dental implants for infection prophylaxis.


2017 ◽  
Vol 88 (7) ◽  
pp. 766-776 ◽  
Author(s):  
Tae-Sung Kim ◽  
Jae-Ryung Cha ◽  
Myong-Seon Gong

In this paper, silver nanoparticle (AgNP)-coated cotton wool with sustained antibacterial properties was produced using a convenient solution-dipping method that involves soaking the cotton in a silver 2-ethylhexylcarbamate solution, followed by thermal reduction at 120℃. The silver-coated cotton was characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction patterns. AgNPs with a uniform and high deposition density formed on the surface of the cotton and ranged in size from 20 to 80 nm. The antibacterial activity, blood clotting, and other physical properties, such as saline absorption and ultraviolet (UV)-blocking of Ag/cotton wool with different silver content were examined. All Ag/cotton fabrics exhibited excellent antibacterial activity against Staphylococcus aureus and Escherichia coli. AgNP-loaded cotton demonstrated faster blood clotting rates and better absorption of 0.9% (w/v) saline solution than unmodified cotton. In addition, AgNP-loaded cotton showed excellent UV protection properties.


2019 ◽  
Author(s):  
Daye Sun ◽  
Jonathan Turner ◽  
Nan Jiang ◽  
Songsong Zhu ◽  
Li Zhang ◽  
...  

<p>Room temperature atmospheric pressure microplasma (APM) was deployed for the first time for the in situ synthesis of anti-bacterial silver nanoparticle / chitosan (AgNP/CS) nanocomposites. The plasma induced liquid chemistry plays a role in the in situ formation of AgNP, the size distribution of which depends on the silver salt precursor concentration. The microplasma process has also simultaneously tailored the physical properties of the composites, rendering more crosslinked chitosan polymer network with shorter molecular chains. The formation of AgNP within the <i>in situ</i> modified chitosan has led to nanocomposites with overall improved mechanical properties and better stability in simulated body fluid. Our plasma synthesized AgNP/CS nanocomposites also demonstrate effective antibacterial properties against <i>E. Coli</i> and <i>S. Aureus</i> bacterial strains, showing their promise in potential antimicrobial applications.</p>


2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Solmaz Akmaz ◽  
Esra Dilaver Adıgüzel ◽  
Muzaffer Yasar ◽  
Oray Erguven

The aim of this study is to investigate the antibacterial properties and characterization of chitosan-silver nanoparticle composite materials. Chitosan-silver nanoparticle composite material was synthesized by adding AgNO3and NaOH solutions to chitosan solution at 95°C. Different concentrations (0,02 M, 0,04 M, and 0,06 M) of AgNO3were used for synthesis. Chitosan-silver nanoparticle composite materials were characterized by Transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet (UV) spectrophotometer, and Fourier transform infrared (FTIR) spectrometer techniques.Escherichia coli,Acinetobacter baumannii,Staphylococcus aureus,Enterococcus faecalis,Pseudomonas aeruginosa, andStreptococcus pneumoniaewere used to test the bactericidal efficiency of synthesized chitosan-Ag nanoparticle composite materials. The biological activity was determined by the minimum bacterial concentration (MBC) of the materials. Antibacterial effect of chitosan-silver nanoparticle materials was increased by increasing Ag amount of the composite materials. The presence of small amount of metal nanoparticles in the composite was enough to significantly enhance antibacterial activity as compared with pure chitosan.


2019 ◽  
Author(s):  
Daye Sun ◽  
Jonathan Turner ◽  
Nan Jiang ◽  
Songsong Zhu ◽  
Li Zhang ◽  
...  

<p>Room temperature atmospheric pressure microplasma (APM) was deployed for the first time for the in situ synthesis of anti-bacterial silver nanoparticle / chitosan (AgNP/CS) nanocomposites. The plasma induced liquid chemistry plays a role in the in situ formation of AgNP, the size distribution of which depends on the silver salt precursor concentration. The microplasma process has also simultaneously tailored the physical properties of the composites, rendering more crosslinked chitosan polymer network with shorter molecular chains. The formation of AgNP within the <i>in situ</i> modified chitosan has led to nanocomposites with overall improved mechanical properties and better stability in simulated body fluid. Our plasma synthesized AgNP/CS nanocomposites also demonstrate effective antibacterial properties against <i>E. Coli</i> and <i>S. Aureus</i> bacterial strains, showing their promise in potential antimicrobial applications.</p>


2011 ◽  
Vol 21 (28) ◽  
pp. 10330 ◽  
Author(s):  
Quan Shi ◽  
Narendiran Vitchuli ◽  
Joshua Nowak ◽  
Jesse Noar ◽  
Jane M. Caldwell ◽  
...  

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