2022
DOI: 10.31514/rliberato.2022v23n39.p77
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Desenvolvimento e caracterização de espuma poliuretânica à base de Difenilmetano diisocianato (MDI) e óleo de linhaça (Linum usitatissimun L.)

Abstract: Neste trabalho, desenvolveu-se uma espuma de poliuretano com poliol que foi obtida a partir do óleo de linhaça. Para a síntese do poliol, o método de epoxidação e hidroxilação do óleo de linhaça foi utilizado em uma única etapa, a partir do ácido perfórmico, gerado in situ, na relação molar de HCOOOH/H2O2/C=C igual a 3/1,5/1. A caracterização do poliol de óleo de linhaça deu-se através do índice de hidroxila, funcionalidade e espectro infravermelho, mostrando ser adequado para síntese de PU. A espuma PU desenv… Show more

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Cited by 2 publications
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“…In order to evaluate the variables that in uence the properties of PU foams, syntheses of 18 PU samples were carried out using the one shot method [15] , which consists of vigorous agitation of the reagents inside a container, for approximately 60 seconds until foam formation. Samples were obtained using commercial diphenylmethane-2,4'-diisocyanate (Redelease, Brazil), commercial polyol (Redelease, Brazil) and castor oil (QuimisulSC, Brazil).…”
Section: Methodsmentioning
confidence: 99%
“…In order to evaluate the variables that in uence the properties of PU foams, syntheses of 18 PU samples were carried out using the one shot method [15] , which consists of vigorous agitation of the reagents inside a container, for approximately 60 seconds until foam formation. Samples were obtained using commercial diphenylmethane-2,4'-diisocyanate (Redelease, Brazil), commercial polyol (Redelease, Brazil) and castor oil (QuimisulSC, Brazil).…”
Section: Methodsmentioning
confidence: 99%