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Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks

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dc.title Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks en
dc.contributor.author Bakar, Mohamed Abu
dc.contributor.author Hausnerová, Berenika
dc.contributor.author Kostrzewa, Marcin
dc.relation.ispartof Journal of Thermoplastic Composite Materials
dc.identifier.issn 0892-7057 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2013
utb.relation.volume 26
utb.relation.issue 10
dc.citation.spage 1364
dc.citation.epage 1376
dc.type article
dc.language.iso en
dc.publisher SAGE Publications Ltd. en
dc.identifier.doi 10.1177/0892705712439570
dc.relation.uri http://jtc.sagepub.com/content/26/10/1364
dc.subject DSC en
dc.subject Epoxy resin en
dc.subject FTIR en
dc.subject mechanical properties en
dc.subject polyurethane en
dc.subject SEM en
dc.description.abstract The present work investigates the effect of epoxy resin (EP) modification with polyurethanes (PURs) based on polyethylene glycol and two different diisocyanates: 4,4′-diphenylmethane diisocyanate (MDI) and 2,4-toluene diisocyanate (TDI). The impact strength of the material based on 15 wt% PUR with TDI was enhanced by 130%, while the critical stress intensity factor and the flexural strength of epoxy composition based on 5 wt% PUR with MDI increased by approximately 140% in comparison with unmodified EP. Fourier transform infrared spectroscopy confirmed the occurrence of chemical reaction between the hydroxyl groups of EP and isocyanate groups of PUR, explaining the improvement in the mechanical properties of EP. Moreover, scanning electron micrographs showed a rough surface with plastic yielding and several microcracks in the compositions containing TDI-based PUR and deformed leaf-like morphology with more elongated structure for the EP modified with MDI-based PUR. © The Author(s) 2012. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1003519
utb.identifier.obdid 43870219
utb.identifier.scopus 2-s2.0-84885992694
utb.identifier.wok 000329489500003
utb.identifier.coden JTMAE
utb.source j-scopus
dc.date.accessioned 2013-11-26T13:18:42Z
dc.date.available 2013-11-26T13:18:42Z
dc.description.sponsorship Operational Program Research and Development for Innovations; European Regional Development Fund (ERDF); national budget of Czech Republic, within the framework of project Centre of Polymer Systems [CZ.1.05/2.1.00/03.0111]
dc.rights.access openAccess
utb.contributor.internalauthor Hausnerová, Berenika
utb.contributor.internalauthor Kostrzewa, Marcin
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