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Statements

Subject Item
n2:RIV%2F70883521%3A28610%2F14%3A43871785%21RIV15-MSM-28610___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
Three different ZnO-based antibacterial fillers having different morphologies in microscale region were prepared by the use of the microwave assisted synthesis protocol created in our laboratory with additional annealing in one case. Further, PVC composites containing 0.5-5 wt.% of ZnO based antibacterial fillers were prepared by melt mixing and characterized by scanning electron microscopy (SEM) and X-ray diffractometry (XRD). Mechanical testing showed no adverse effect on the working of polymer composites due to either of the fillers used or the applied processing conditions in comparison with the neat medical grade PVC. The surface antibacterial activity of the compounded PVC composites was assessed against Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538P according to ISO 22196: 2007 (E). All materials at almost all filler loading levels were efficient against both species of bacteria. The material with the most expanding morphology assuring the largest contact between filler and matrix achieved an excellent level of more than 99.9999% reduction of viable cells of E. coli in comparison to untreated PVC and performed very well against S. aureus, too. A correlation between the morphology and efficacy of the filler was observed and, as a result, a general rule was formulated which links the proneness of the microparticles to perform well against bacteria to their shape and morphology. Three different ZnO-based antibacterial fillers having different morphologies in microscale region were prepared by the use of the microwave assisted synthesis protocol created in our laboratory with additional annealing in one case. Further, PVC composites containing 0.5-5 wt.% of ZnO based antibacterial fillers were prepared by melt mixing and characterized by scanning electron microscopy (SEM) and X-ray diffractometry (XRD). Mechanical testing showed no adverse effect on the working of polymer composites due to either of the fillers used or the applied processing conditions in comparison with the neat medical grade PVC. The surface antibacterial activity of the compounded PVC composites was assessed against Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538P according to ISO 22196: 2007 (E). All materials at almost all filler loading levels were efficient against both species of bacteria. The material with the most expanding morphology assuring the largest contact between filler and matrix achieved an excellent level of more than 99.9999% reduction of viable cells of E. coli in comparison to untreated PVC and performed very well against S. aureus, too. A correlation between the morphology and efficacy of the filler was observed and, as a result, a general rule was formulated which links the proneness of the microparticles to perform well against bacteria to their shape and morphology.
dcterms:title
Antibacterial performance of ZnO-based fillers with mesoscale structured morphology in model medical PVC composites Antibacterial performance of ZnO-based fillers with mesoscale structured morphology in model medical PVC composites
skos:prefLabel
Antibacterial performance of ZnO-based fillers with mesoscale structured morphology in model medical PVC composites Antibacterial performance of ZnO-based fillers with mesoscale structured morphology in model medical PVC composites
skos:notation
RIV/70883521:28610/14:43871785!RIV15-MSM-28610___
n4:aktivita
n12:P
n4:aktivity
P(ED2.1.00/03.0111), P(EE.2.3.20.0104)
n4:cisloPeriodika
Neuveden
n4:dodaniDat
n18:2015
n4:domaciTvurceVysledku
n10:8125562 n10:5474353 n10:6730604 n10:1701509 n10:7874138
n4:druhVysledku
n13:J
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n16:predkladatel
n4:idSjednocenehoVysledku
3378
n4:idVysledku
RIV/70883521:28610/14:43871785
n4:jazykVysledku
n8:eng
n4:klicovaSlova
Zinc oxide; Nanostructure; Microparticle; Mesoscale; Composite; Antibacterial
n4:klicoveSlovo
n5:Nanostructure n5:Microparticle n5:Antibacterial n5:Zinc%20oxide n5:Composite n5:Mesoscale
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[082D2D55AA44]
n4:nazevZdroje
Materials Science and Engineering C
n4:obor
n19:CD
n4:pocetDomacichTvurcuVysledku
5
n4:pocetTvurcuVysledku
5
n4:projekt
n7:ED2.1.00%2F03.0111 n7:EE.2.3.20.0104
n4:rokUplatneniVysledku
n18:2014
n4:svazekPeriodika
41
n4:tvurceVysledku
Bažant, Pavel Kuřitka, Ivo Machovský, Michal Sáha, Petr Veselá, Daniela
n4:wos
000338606700010
s:issn
0928-4931
s:numberOfPages
8
n11:doi
10.1016/j.msec.2014.04.034
n17:organizacniJednotka
28610