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Plasma treatment of biomedical materials

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dc.title Plasma treatment of biomedical materials en
dc.contributor.author Junkar, Ita
dc.contributor.author Cvelbar, Uroš
dc.contributor.author Lehocký, Marián
dc.relation.ispartof Materiali in Tehnologije
dc.identifier.issn 1580-2949 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2011
utb.relation.volume 45
utb.relation.issue 3
dc.citation.spage 221
dc.citation.epage 226
dc.type article
dc.language.iso en
dc.publisher Institut za Kovinske Materiale in Tehnologije Ljubljana sl
dc.relation.uri http://mit.imt.si/Revija/mit113.html
dc.subject plasma treatment en
dc.subject biocompatibility en
dc.subject polymer en
dc.subject vascular grafts en
dc.subject endothelia cells en
dc.subject platelets en
dc.description.abstract Surface plasma treatment techniques for modification of biomedical polymeric materials are presented. The emphasis is on the use of non-equilibrium radiofrequency (RF) oxygen and nitrogen plasma. By variation of discharge parameters (power, discharge frequency, type of gas) and plasma parameters (density of neutrals and ions, kinetic energy of electrons, gas temperature) it is possible to produce polymer surfaces with different surface properties. Already after short plasma treatment time the surface of polymeric material becomes hydrophilic. Formation of nitrogen and oxygen functional groups is observed immediately after plasma treatment. By optimisation of plasma treatment time the number of newly formed functional groups can be increased. Plasma treatment also produces morphological changes of the surface; nanohills of different shapes and height can be formed on PET surface depending on the treatment time and type of gas. Evidently the change in surface morphology affects the change in surface roughness, which increases with longer plasma treatment time. Plasma treatment influences also on the biological response, as all plasma treated surfaces exhibit improved proliferation of fibroblast and endothelia cells. The number of adherent platelets practically does not change after nitrogen plasma treatment, however much lower number of adherent platelets is observed on oxygen plasma treated surfaces. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1002190
utb.identifier.rivid RIV/70883521:28610/11:43865318!RIV12-MSM-28610___
utb.identifier.obdid 43865320
utb.identifier.scopus 2-s2.0-79958004146
utb.identifier.wok 000291170700010
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:38Z
dc.date.available 2011-08-16T15:06:38Z
dc.rights.uri http://mit.imt.si/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Lehocký, Marián
utb.fulltext.affiliation Ita Junkar1, Uroš Cvelbar2, Marian Lehocky3 1 Odsek za tehnologijo površin in optoelektroniko, Institut "Jožef Stefan", Jamova cesta 39, 1000 Ljubljana, Slovenija 2 Center of Excellence for Polymer Materials and Technologies, Tehnolo{ki park 24, 1000 Ljubljana, Slovenia 3 Medical Materials Research Centre, Technology Park, Tomas Bata University, Nad Ovcirnou 3685, Zlin, Czech Republic ita.junkar@ijs.si
utb.fulltext.dates Prejem rokopisa – received: 2011-02-15; sprejem za objavo – accepted for publication: 2011-03-06
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utb.fulltext.sponsorship The authors acknowledge the financial support from the Ministry of Higher Education, Science and Technology of the Republic of Slovenia through the contract No. 3211-10-000057 (Center of Excellence Polymer Materials and Technologies).
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