dc.creatorMarcovich, Norma Esther
dc.creatorKuranska, Maria
dc.creatorProciak, Aleksander
dc.creatorMalewska, Elzbieta
dc.creatorBujok, Sonia
dc.date.accessioned2017-12-28T17:18:23Z
dc.date.accessioned2018-11-06T13:03:18Z
dc.date.available2017-12-28T17:18:23Z
dc.date.available2018-11-06T13:03:18Z
dc.date.created2017-12-28T17:18:23Z
dc.date.issued2017-06-02
dc.identifierMalewska, Elzbieta; Prociak, Aleksander; Kuranska, Maria; Marcovich, Norma Esther; Bujok, Sonia; The effect of different palm oil-based bio-polyols on foaming process and selected properties of porous polyurethanes; John Wiley & Sons Ltd; Polymer International; 66; 11; 2-6-2017; 1522-1529
dc.identifier0959-8103
dc.identifierhttp://hdl.handle.net/11336/31809
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1872476
dc.description.abstractRigid polyurethane foams were successfully prepared by blending up to 70wt% of two different palm oil-based bio-polyolswith a petrochemical polyether polyol. The bio-polyols were synthesized by epoxidation?oxirane ring-opening process usingwater (PP102) and diethylene glycol (PP147), respectively. Due to the high viscosity of both bio-polyols the reactive mixturewas heated to start the foaming reaction at about 50 ∘C. Under these conditions, the gelling reactions speed up as the amountofPP147increases but slowdownto agreat extentwhenPP102is used. The thermal conductivityofmodified foamsishigher andthe closed cell content lower compared to reference ones, evenwhen the bio-foams present a lower apparent density. However,all foams exhibit reduced water absorption, excellent dimensional stability and better thermal stability at temperatures up to400 ∘C than the control foam. Conversely, their mechanical and dynamic mechanical properties become poorer as the PP147concentration increases and even more so if PP102 is used instead. PP147 foams containing up to 50% bio-polyol could beused as a green replacement of petroleum-based ones in applications where excellent behaviour in compression (the mostaffectedproperties) is not fundamental,with the additional advantages of reduced density and increased content ofbio-derivedcomponents.
dc.languageeng
dc.publisherJohn Wiley & Sons Ltd
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/pi.5408
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pi.5408/abstract#publication-history
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectRigid polyurethane foams
dc.subjectPalm oil-based polyol
dc.subjectHeat-insulating materials
dc.subjectCellular structure
dc.titleThe effect of different palm oil-based bio-polyols on foaming process and selected properties of porous polyurethanes
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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