Sonochemical coating of textiles with hybrid ZnO/chitosan antimicrobial nanoparticles
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Tipus de documentArticle
Data publicació2014-01-09
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Abstract
Textiles are good substrates for growth of microorg
anisms especially under moisture and
temperature conditions found in hospitals. Microbia
l shedding from the body occurs
continuously at contact of the patient with textile
materials used in medical practice, contributing
to the occurrence of hospital acquired infections.
Thus, the use of efficient antimicrobial textiles
is necessary to prevent the transfer of pathogens a
nd the infection incidence. In this work, hybrid
antimicrobial coatings were generated on cotton fab
rics by means of a one-step simultaneous
sonochemical deposition of ZnO nanoparticles (NPs)
and chitosan. The process was further
optimized in terms of reagents concentration and pr
ocessing time in order to improve the
antibacterial properties of the fabric and ensure t
heir biocompatibility. The highest antibacterial
activity of the fabrics against two medically relev
ant bacterial species
was achieved in a 30 min
sonochemical coating process using 2 mM ZnO NPs sus
pension. When chitosan was
simultaneously deposited with the same amount of Zn
O, the obtained hybrid NPs coating
displayed higher by 48 and 17 % antibacterial activ
ity against
Staphylococcus aureus
and
Escherichia coli
, respectively. The presence of biopolymer also imp
roved the durability of the
antimicrobial effect of the coatings by 21 % for
Staphylococcus aureus
and 40 % for
Escherichia
coli
, evaluated after applying multiple washing cycles
at hospital laundering regimes. Finally, 87
% biocompatibility improvement supported by fibrobl
ast viability was observed for the hybrid
ZnO/chitosan coating compared to the steady decreas
e of cells viability over one week in contact
with the fabrics coated with ZnO alone.
CitacióPetkova, P. [et al.]. Sonochemical coating of textiles with hybrid ZnO/chitosan antimicrobial nanoparticles. "ACS applied materials and interfaces", 09 Gener 2014.
ISSN1944-8244
Versió de l'editorhttp://pubs.acs.org/doi/abs/10.1021/am404852d
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