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dc.title | Structure and antibacterial properties of polyethylene/organo-vermiculite composites | en |
dc.contributor.author | Hundáková, Marianna | |
dc.contributor.author | Tokarský, Jonáš | |
dc.contributor.author | Valášková, Marta | |
dc.contributor.author | Slobodian, Petr | |
dc.contributor.author | Pazdziora, Erich | |
dc.contributor.author | Kimmer, Dušan | |
dc.relation.ispartof | Solid State Sciences | |
dc.identifier.issn | 1293-2558 Scopus Sources, Sherpa/RoMEO, JCR | |
dc.date.issued | 2015 | |
utb.relation.volume | 48 | |
dc.citation.spage | 197 | |
dc.citation.epage | 204 | |
dc.type | article | |
dc.language.iso | en | |
dc.publisher | Elsevier Masson SAS | |
dc.identifier.doi | 10.1016/j.solidstatesciences.2015.08.011 | |
dc.relation.uri | https://www.sciencedirect.com/science/article/pii/S1293255815300315 | |
dc.subject | Antibacterial activity | en |
dc.subject | Molecular modeling | en |
dc.subject | Organo-vermiculite nanofiller | en |
dc.subject | Polyethylene | en |
dc.subject | X-ray diffraction | en |
dc.description.abstract | Vermiculite (VER) was modified by cation exchange with hexadecyltrimethylammonium (HDTMA+) bromide in three concentrations and used as organo-VER clay mineral nanofillers (denoted as HDTMA+1-VER, HDTMA+2-VER, and HDTMA+3-VER) in polyethylene (PE). PE/organo-VER composites were prepared via a melt compounding technique and pressed into thin plates. The organo-VER nanofillers and composite plates were characterized by X-ray diffraction analysis which in combination with molecular modeling confirmed the intercalation of HDTMA+ molecules. It was found that alkyl tails of HDTMA+ molecules create a non-polar, water-free area which may help the PE chains to enter the VER interlayer space. The nanocomposite structure was confirmed for PE/HDTMA+3-VER. PE/organo-VER composites were also studied by scanning electron microscopy and light microscopy and by creep testing. Antibacterial activity of powder organo-VER nanofillers was tested on Gram-positive (G+) (Staphylococcus aureus, Enterococcus faecalis) and Gram-negative (G-) (Escherichia coli) bacterial strains. The most sensitive G+ bacteria responded by stopping their bacterial growth after 24 h with a minimum inhibitory concentration (MIC) 0.014% (w/v) at all samples. Growth of G- bacteria was inhibited after 24 h with higher MIC value 0.041-10% (w/v) in relation to the content of HDTMA+ in samples. The surfaces of PE/organo-VER composites are very active against G+ bacterial strain E. faecalis. The number of bacterial colonies forming units (cfu) on surfaces of samples was reduced by approximately several orders. The number of bacterial colonies after 48 h was 0 cfu on the surface of PE/HDTMA+3-VER nanocomposite. © 2015 Elsevier Masson SAS. All rights reserved. | en |
utb.faculty | University Institute | |
dc.identifier.uri | http://hdl.handle.net/10563/1005647 | |
utb.identifier.rivid | RIV/70883521:28610/15:43873185!RIV16-MSM-28610___ | |
utb.identifier.obdid | 43873616 | |
utb.identifier.scopus | 2-s2.0-84941554293 | |
utb.identifier.wok | 000363347800030 | |
utb.identifier.coden | SSSCF | |
utb.source | j-wok | |
dc.date.accessioned | 2015-10-19T08:16:06Z | |
dc.date.available | 2015-10-19T08:16:06Z | |
dc.description.sponsorship | IT4Innovations Centre of Excellence project [CZ.1.05/1.1.00/02.0070]; Ministry of Education, Youth and Sports of Czech Republic [SP2014/82]; operational program Research and Development for Innovations - European Regional Development Fund (ERDF); National Budget of the Czech Republic [CZ.1.05/2.1.00/03.0111] | |
utb.ou | Centre of Polymer Systems | |
utb.contributor.internalauthor | Slobodian, Petr | |
utb.fulltext.affiliation | Marianna Hundáková a,b*, Jonáš Tokarský a,b, Marta Valášková a,b, Petr Slobodian c, Erich Pazdziora d, Dusan Kimmer e a Nanotechnology Centre, VSB e Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava, Poruba, Czech Republic b IT4Innovations Centre of Excelence, VSB e Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava, Poruba, Czech Republic c Centre of Polymer Systems, University Institute, Tomáš Bat'a University in Zlín, Nad Ovcírnou 3685, CZ-760 01 Zlín, Czech Republic d Institute of Public Health Ostrava, Centre of Clinical Laboratories, Partyzánské náměstí 7, CZ-702 00 Ostrava, Czech Republic e SPUR a.s., tr. T. Bati 299, CZ-764 22 Zlín, Czech Republic * Corresponding author. Nanotechnology Centre, VSB e Technical University of Ostrava, 17. listopadu 15/2172, CZ-708 33 Ostrava, Poruba, Czech Republic. E-mail address: [email protected] (M. Hundáková). | |
utb.fulltext.dates | Received 20 November 2014 Received in revised form 7 August 2015 Accepted 11 August 2015 Available online 13 August 2015 | |
utb.fulltext.faculty | University Institute | |
utb.fulltext.ou | Centre of Polymer Systems |