1. Repositório Institucional da UFMG
  2. Publicações Científicas e Culturais
  3. Artigo de Periódico
Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/54299
Full metadata record
DC FieldValueLanguage
dc.creatorCamila Santana Carriçopt_BR
dc.creatorThaís Fragapt_BR
dc.creatorVagner Eustáquio de Carvalhopt_BR
dc.creatorVânya Márcia Duarte Pasapt_BR
dc.date.accessioned2023-06-01T15:31:38Z-
dc.date.available2023-06-01T15:31:38Z-
dc.date.issued2017-
dc.citation.volume22pt_BR
dc.citation.issue7pt_BR
dc.identifier.doihttps://doi.org/10.3390/molecules22071091pt_BR
dc.identifier.issn1420-3049pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/54299-
dc.description.resumoRigid polyurethane foams were synthesized using a renewable polyol from the simple physical mixture of castor oil and crude glycerol. The effect of the catalyst (DBTDL) content and blowing agents in the foams’ properties were evaluated. The use of physical blowing agents (cyclopentane and n-pentane) allowed foams with smaller cells to be obtained in comparison with the foams produced with a chemical blowing agent (water). The increase of the water content caused a decrease in density, thermal conductivity, compressive strength, and Young’s modulus, which indicates that the increment of CO2 production contributes to the formation of larger cells. Higher amounts of catalyst in the foam formulations caused a slight density decrease and a small increase of thermal conductivity, compressive strength, and Young’s modulus values. These green foams presented properties that indicate a great potential to be used as thermal insulation: density (23–41 kg·m−³), thermal conductivity (0.0128–0.0207 W·m−¹·K−¹), compressive strength (45–188 kPa), and Young’s modulus (3–28 kPa). These biofoams are also environmentally friendly polymers and can aggregate revenue to the biodiesel industry, contributing to a reduction in fuel prices.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofMolecules-
dc.rightsAcesso Abertopt_BR
dc.subjectPolyurethane foamspt_BR
dc.subjectCastor oilpt_BR
dc.subjectCrude glycerolpt_BR
dc.subjectBiopolyolspt_BR
dc.subjectThermal insulatorpt_BR
dc.subject.otherQuímica da biomassapt_BR
dc.subject.otherOleo de ricinopt_BR
dc.subject.otherOleo de mamonapt_BR
dc.subject.otherGlicerinapt_BR
dc.subject.otherPolímerospt_BR
dc.subject.otherPolióispt_BR
dc.titlePolyurethane foams for thermal insulation uses produced from castor oil and crude glycerol biopolyolspt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.mdpi.com/1420-3049/22/7/1091pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2510-3845pt_BR
Appears in Collections:Artigo de Periódico

Files in This Item:
File Description SizeFormat 
Polyurethane foams for thermal insulation uses produced from castor oil and crude glycerol.pdf3.89 MBAdobe PDFView/Open
Show simple item record


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.