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Polyurethane Foams from Liquefied Eucalyptus globulus Branches

2019Journal article Open access
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dc.contributor.authorDomingos, Idalina
dc.contributor.authorFernandes, Ana Paula
dc.contributor.authorFerreira, José
dc.contributor.authorCruz-Lopes, Luísa
dc.contributor.authorEsteves, Bruno
dc.date.accessioned2019-01-28T11:16:19Z
dc.date.available2019-01-28T11:16:19Z
dc.date.issued2019
dc.description.abstractCurrently, polyurethane (PU) production is completely dependent upon fossil oil, as the two primary reagents necessary for PU production, polyol and isocyanate, are derived from fossil fuels. Eucalyptus branches are waste products for most forest management companies. In this work, polyols obtained by the liquefaction of eucalyptus branches were used for foam production. The influence of the isocyanate, catalyst, surfactant, and blowing agent contents on the foam properties was studied. Overall the amount of each chemical used in the production of PU foams had a noticeable effect on the density and compressive properties. The amount of water (blowing agent) had the strongest effect and decreased the density and compressive properties because of higher foam expansion. The other chemicals increased or decreased the density and compressive stress depending on the amount used. The density of the produced foams ranged from 36 kg/m3 to 108 kg/m3, the compressive stress ranged from 15 kPa to 149 kPa, and the Young’s modulus ranged from 64 kPa to 2100 kPa. The results showed that it is possible to convert these forest residues into PU foams with properties somewhat similar to those of commercial foams, although with a lower compressive strength.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDomingos, I., Fernandes, A., Ferreira, J., Cruz-Lopes, L., and Esteves, B. (2018). "Polyurethane foams from liquefied Eucalyptus globulus branches," BioResources. 14(1), 31-43.pt_PT
dc.identifier.doi10.15376/biores.14.1.31-43pt_PT
dc.identifier.issn1930-2126
dc.identifier.urihttp://hdl.handle.net/10400.19/5364
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationFCT - Fundação para a Ciência e Tecnologia, I.P., Sob o projeto UID/Multi/04016/2016 e IPV/CI&DETSpt_PT
dc.relation.publisherversionhttp//www.ncsu.edu/bioresourcespt_PT
dc.subjectCompressive propertiespt_PT
dc.subjectEucalyptus branchespt_PT
dc.subjectLiquefactionpt_PT
dc.subjectOptimizationpt_PT
dc.subjectPolyurethane foamspt_PT
dc.titlePolyurethane Foams from Liquefied Eucalyptus globulus Branchespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage43pt_PT
oaire.citation.startPage31pt_PT
oaire.citation.titleBioResourcespt_PT
oaire.citation.volume14(1)pt_PT
person.familyNameDomingos
person.familyNameFerreira
person.familyNameGonçalves Oliveira Valente da Cruz-Lopes
person.familyNameEsteves
person.givenNameidalina
person.givenNameJosé
person.givenNameLuísa Paula
person.givenNameBruno
person.identifier2119255
person.identifier.ciencia-id7116-E1DE-88E7
person.identifier.ciencia-idB81E-BE45-E128
person.identifier.ciencia-id7916-0833-5B38
person.identifier.ciencia-id521B-63A7-B248
person.identifier.orcid0000-0002-4308-1563
person.identifier.orcid0000-0001-7596-8065
person.identifier.orcid0000-0001-6502-7202
person.identifier.orcid0000-0001-6660-3128
person.identifier.ridC-2173-2012
person.identifier.scopus-author-id24281086400
person.identifier.scopus-author-id18133647300
person.identifier.scopus-author-id57202554441
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication7d09c228-3415-4272-9299-89c6951565d7
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relation.isAuthorOfPublication.latestForDiscoverya3351493-41e8-4758-acae-39e3382d0b04

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