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

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About: Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://jtc.sagepub.com/content/26/10/1364.full.pdf+html
Description	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 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. (en)
Title	Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks (en)
skos:prefLabel	Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks Effect of diisocyanates on the properties and morphology of epoxy/polyurethane interpenetrating polymer networks (en)
skos:notation	RIV/70883521:28110/13:43870008!RIV14-MSM-28110___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED2.1.00/03.0111)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Kostrzewa, Marcin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Tomáše Bati ve Zlíně / Fakulta technologická
http://linked.open...dnocenehoVysledku	71470
http://linked.open...ai/riv/idVysledku	RIV/70883521:28110/13:43870008
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	SEM; polyurethane; mechanical properties; FTIR; Epoxy resin; DSC (en)
http://linked.open.../riv/klicoveSlovo	SEM DSC FTIR mechanical properties Epoxy resin polyurethane
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[F18570DE5CFF]
http://linked.open...i/riv/nazevZdroje	Journal of Thermoplastic Composite Materials
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Centre of Polymer Systems
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	26
http://linked.open...iv/tvurceVysledku	Hausnerová, Berenika Kostrzewa, Marcin Bakar, Mohamed Abu
http://linked.open...ain/vavai/riv/wos	000329489500003
issn	0892-7057
number of pages	13 (xsd:int)
http://bibframe.org/vocab/doi	10.1177/0892705712439570
http://localhost/t...ganizacniJednotka	28110

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