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Influence of ultraviolet radiation on mechanical properties of a photoinitiator compounded high vinyl styrene-butadiene-styrene block copolymer

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dc.title Influence of ultraviolet radiation on mechanical properties of a photoinitiator compounded high vinyl styrene-butadiene-styrene block copolymer en
dc.contributor.author Datta, Sanjoy
dc.contributor.author Stoček, Radek
dc.contributor.author Naskar, Kinsuk
dc.relation.ispartof Polymers
dc.identifier.issn 2073-4360 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2021
utb.relation.volume 13
utb.relation.issue 8
dc.type article
dc.language.iso en
dc.publisher MDPI AG
dc.identifier.doi 10.3390/polym13081287
dc.relation.uri https://www.mdpi.com/2073-4360/13/8/1287
dc.subject ultraviolet radiation en
dc.subject thermoplastic elastomer en
dc.subject high vinyl S-B-S en
dc.subject photoinitiator en
dc.subject mechanical properties en
dc.description.abstract Ultraviolet curing of elastomers is a special curing technique that has gained importance over the conventional chemical crosslinking method, because the former process is faster, and thus, time-saving. Usually, a suitable photoinitiator is required to initiate the process. Ultraviolet radiation of required frequency and intensity excites the photoinitiator which abstracts labile hydrogen atoms from the polymer with the generation of free radicals. These radicals result in crosslinking of elastomers via radical-radical coupling. In the process, some photodegradation may also take place. In the present work, a high vinyl (similar to 50%) styrene-butadiene-styrene (SBS) block copolymer which is a thermoplastic elastomer was used as the base polymer. An attempt was made to see the effect of ultraviolet radiation on the mechanical properties of the block copolymer. The process variables were time of exposure and photoinitiator concentration. Mechanical properties like tensile strength, elongation at break, modulus at different elongations and hardness of the irradiated samples were studied and compared with those of unirradiated ones. In this S-B-S block copolymer, a relatively low exposure time and low photoinitiator concentration were effective in obtaining optimized mechanical properties. Infrared spectroscopy, contact angle and scanning electron microscopy were used to characterize the results obtained from mechanical measurements. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1010344
utb.identifier.scopus 2-s2.0-85105765479
utb.identifier.wok 000644585200001
utb.identifier.pubmed 33920836
utb.source J-wok
dc.date.accessioned 2021-05-25T11:04:52Z
dc.date.available 2021-05-25T11:04:52Z
dc.description.sponsorship Ministry of Education, Youth and Sports of the Czech Republic-DKRVO [RP/CPS/2020/004]
dc.rights Attribution 4.0 International
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.rights.access openAccess
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Datta, Sanjoy
utb.contributor.internalauthor Stoček, Radek
utb.fulltext.sponsorship This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic—DKRVO (RP/CPS/2020/004).
utb.wos.affiliation [Datta, Sanjoy; Stocek, Radek] Tomas Bata Univ Zlin, Ctr Polymer Syst, Tr Tomase Bati 5678, Zlin 76001, Czech Republic; [Naskar, Kinsuk] Indian Inst Technol Kharagpur, Kharagpur 721302, W Bengal, India
utb.fulltext.projects RP/CPS/2020/004
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Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International