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Polyamide surface layer nano-indentation and thermal properties modified by irradiation

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dc.title Polyamide surface layer nano-indentation and thermal properties modified by irradiation en
dc.contributor.author Ovsík, Martin
dc.contributor.author Maňas, Miroslav
dc.contributor.author Staněk, Michal
dc.contributor.author Dočkal, Adam
dc.contributor.author Vaněk, Jiří
dc.contributor.author Mizera, Aleš
dc.contributor.author Adámek, Milan
dc.contributor.author Stoklásek, Pavel
dc.relation.ispartof Materials
dc.identifier.issn 1996-1944 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2020
utb.relation.volume 13
utb.relation.issue 13
dc.citation.spage 1
dc.citation.epage 16
dc.type article
dc.language.iso en
dc.publisher MDPI AG
dc.identifier.doi 10.3390/ma13132915
dc.relation.uri https://www.mdpi.com/1996-1944/13/13/2915
dc.subject polyamide en
dc.subject surface layer en
dc.subject cross-linking en
dc.subject electron rays en
dc.subject nano-indentation en
dc.subject gel content en
dc.description.abstract This study describes the effect of electron radiation on the nano-mechanical properties of surface layers of selected polyamide (PA) types. Electron radiation initiates the cross-linking of macromolecules in the polyamide structure, leading to the creation of a 3Dnetworkwhich fundamentally changes the properties of the tested polymers. Selected types of polyamide (PA 6, PA 66 and PA 9T) were exposed to various intensities of electron radiation (33 kGy, 66 kGy, 99 kGy, 132 kGy, 165 kGy and 198 kGy). The cross-linked polyamides' surface properties were measured by means of the modern nano-indentation technique (Depth Sensing Indentation; DSI), which operates on the principle of the immediate detection of indenter penetration depth in dependence on the applied load. The evaluation was preformed using the Oliver-Pharrmethod. The effect of electron radiation on the tested polyamides manifested itself in the creation of a 3D network, which led to an increase of surface layer properties, such as indentation hardness, elastic modulus, creep and temperature resistance, by up to 93%. The increase of temperature and mechanical properties substantially broadens the field of application of these materials in technical practice, especially when higher temperature resistance is required. The positive changes to the nano-mechanical properties as well as mechanical and temperature capabilities instigated by the cross-linking process were confirmed by the gel volume test. These measurements lay the foundation for a detailed study of this topic, as well as for a more effective means of modifying chosen properties of technical polyamide products by radiation. © 2020 by the authors. en
utb.faculty Faculty of Technology
utb.faculty Faculty of Applied Informatics
dc.identifier.uri http://hdl.handle.net/10563/1009803
utb.identifier.scopus 2-s2.0-85087937424
utb.identifier.wok 000552325400001
utb.identifier.pubmed 32610497
utb.source j-scopus
dc.date.accessioned 2020-07-29T07:30:39Z
dc.date.available 2020-07-29T07:30:39Z
dc.description.sponsorship European Regional Development FundEuropean Union (EU) [CZ.1.05/2.1.00/19.0376]; Czech Ministry of Education, Youth and Sports of the Czech Republic within the National Sustainability Program [LO1303 (MSMT-7778/2014)]; TBU in Zlin Internal Grant Agency [IGA/FT/2020/003]
dc.rights Attribution 4.0 International
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.ou CEBIA-Tech
utb.contributor.internalauthor Ovsík, Martin
utb.contributor.internalauthor Maňas, Miroslav
utb.contributor.internalauthor Staněk, Michal
utb.contributor.internalauthor Dočkal, Adam
utb.contributor.internalauthor Vaněk, Jiří
utb.contributor.internalauthor Mizera, Aleš
utb.contributor.internalauthor Adámek, Milan
utb.contributor.internalauthor Stoklásek, Pavel
utb.fulltext.sponsorship This research was funded by the European Regional Development Fund supported this work under the project: CEBIA-Tech Instrumentation No. CZ.1.05/2.1.00/19.0376 and Czech Ministry of Education, Youth and Sports of the Czech Republic within the National Sustainability Program; Project No. LO1303 (MSMT-7778/2014) and supported by the TBU in Zl?n Internal Grant Agency: No. IGA/FT/2020/003.
utb.wos.affiliation [Ovsik, Martin; Stanek, Michal; Dockal, Adam; Vanek, Jiri] Tomas Bata Univ Zlin, Fac Technol, Vavreckova 275, Zlin 76001, Czech Republic; [Manas, Miroslav; Mizera, Ales; Adamek, Milan; Stoklasek, Pavel] Tomas Bata Univ Zlin, Fac Appl Informat, CEBIA Tech, Nad Stranemi 4511, Zlin 76005, Czech Republic
utb.scopus.affiliation Faculty of Technology, Tomas Bata University in Zlín, Vavreckova 275, Zlín, 760 01, Czech Republic; Faculty of Applied Informatics, Tomas Bata University in Zlín, CEBIA-Tech, Nad Stranemi 4511, Zlín, 760 05, Czech Republic
utb.fulltext.projects CZ.1.05/2.1.00/19.0376
utb.fulltext.projects LO1303
utb.fulltext.projects MSMT-7778/2014
utb.fulltext.projects IGA/FT/2020/003
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