biomaterials-materials-physics-2019-keynote

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May 20-21, 2019 | Vienna, Austria
Biomaterials and Nanomaterials &
Materials Physics and Materials Science
2nd International Conference on
Page 25
Journal of Materials Science and Nanotechnology | Volume 3
Aharon Gedanken
Bar-Ilan University, Israel
Making the hospital a safer place by the sonochemical coating of
all its textiles and medical devices with antibacterial nanoparticles
Sonochemistry is an excellent technique to coat
nanomaterials on various substrates, imparting new
properties to the substrates. After a short demonstration of
coating NPs on ceramics and stainless steel, I'll present the
coating of textiles such as polyester, cotton, and nylon. In all
cases a homogeneous coating of NPs was achieved. Lately,
the FDA shows less enthusiasm towards nano Ag, as a result,
we have moved to NPs of ZnO, and CuO as antibacterial
agents. They were coated on the above-mentioned fabrics
and showed excellent antibacterial properties. The coated
textiles were examined for the changes in the mechanical
strength of the fabric. A special attention was dedicated
to the question whether the NPs are leaching off the fabric
when washed repeatedly. The coated ZnO NPs on cotton
underwent 65 washing cycles at 75 0 C in water in a Hospital
washing machine, no NPs were found in the washing solution
and the antibacterial behavior was maintained. Recently, an
experiment was conducted at PIGOROV Hospital in Sofia,
Bulgaria in which one operation room was equipped with
antibacterial textiles, namely, bed sheets, pajamas, pillow
cover, and bed cover. 22 Patients in this operation room
were probed for bacterial infections. Their infection level
was compared with 17 control patient that were using
regular textiles. The results are demonstrating that a lower
infection level is observed for those patients exposed to the
antibacterial textiles. In addition, medical devices were also
coated with the same NPs. The following medical devices
were coated withmetal oxide Nanoparticles and showed very
good biocidal properties and inhibition of biofilm formation
1) Urinal Catheters 2) Contact lens 3) Cochlear electrodes,
4) metallic implants, and 5) silicone implants. In my lecture
examples of 1) and 2) will be demonstrated. Coating of
Catheters with the above-mentioned NPs were performed
and the coated catheters were inserted in rabbits. Results
showed that the urine of the rabbits was not contaminated
with bacteria.
Speaker Biography
Aharon Gedanken obtained his PhD degree from Tel Aviv University,
Israel. After his postdoctoral research at USC in Los Angeles. He got a
lecturer position at BIU on Oct 1975. In 1994, he switched his research
interest from spectroscopy to nanotechnology. His special synthetic
methods of nanomaterials include: Sonochemistry, Microwave
Superheating, Sono-electrochemistry, and Reactions under Autogenic
Pressure at Elevated Temperatures (RAPET). Since 2004, he is mostly
focused on the applications of nanomaterials. He has published 825
peer-reviewed manuscripts in international journals. His H-Index is
90. He was a partner in five EC FP7 projects one of them, SONO, was
coordinated by him. This project was announced by the EC as a “Success
Story”. He was the Israeli representative to the NMP (Nano, Materials,
and Processes) committee of EC in FP7. He was awarded the prize of
the Israel Vacuum Society in 2009 and the Israel Chemical Society for
excellence in Research in Feb 2013.
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