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Preparation and property evaluation of nanocomposites based on polyurethane-modified epoxy/montmorillonite systems

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dc.title Preparation and property evaluation of nanocomposites based on polyurethane-modified epoxy/montmorillonite systems en
dc.contributor.author Bakar, Mohamed Abu
dc.contributor.author Kostrzewa, Marcin
dc.contributor.author Hausnerová, Berenika
dc.contributor.author Sar, K.
dc.relation.ispartof Advances in Polymer Technology
dc.identifier.issn 0730-6679 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2010
utb.relation.volume 29
utb.relation.issue 4
dc.citation.spage 237
dc.citation.epage 248
dc.type article
dc.language.iso en
dc.publisher John Wiley & Sons, Inc. en
dc.identifier.doi 10.1002/adv.20192
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/adv.20192/abstract
dc.subject epoxy en
dc.subject mechanical properties en
dc.subject nanocomposites en
dc.subject polyurethanes en
dc.subject structure en
dc.description.abstract Montmorillonite nanoclay and polyurethanes obtained from polyethylene glycol (PUR 400) and polyoxypropylene diol (PUR 1002) were used to enhance the mechanical properties of an epoxy resin. Maximum impact strength impovement was obtained with composition containing 2% nanoclay and 10%% PUR 400 as well as that with 1% nanoclay and 15% PUR 400, corresponding to 110% and 75%, respectively, in relation to the unmodified epoxy resin. Moreover, a 10-fold increase was observed with respect to the flexural strain at break for the composition containing 15% PUR 1002 and 2% nanoclay. SEM micrographs have indicated that the mechanism of mechanical property enhancement is associated with increased yield of the epoxy matrix. Moreover, FTIR results showed that some chemical reactions have taken place between the hydroxyl groups of epoxy resin and the isocyanate groups of polyurethane, explaining partly the improvement in the mechanical properties of the polymer matrix. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1001223
utb.identifier.rivid RIV/70883521:28110/10:63510045!RIV11-MSM-28110___
utb.identifier.obdid 43863581
utb.identifier.scopus 2-s2.0-78649604873
utb.identifier.wok 000284514200003
utb.source j-riv
dc.rights.access openAccess
utb.contributor.internalauthor Kostrzewa, Marcin
utb.contributor.internalauthor Hausnerová, Berenika
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