Polyurethane foams for thermal insulation uses produced from castor oil and crude glycerol biopolyols

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dc.creatorCamila Santana Carriço
dc.creatorThaís Fraga
dc.creatorVagner Eustáquio de Carvalho
dc.creatorVânya Márcia Duarte Pasa
dc.date.accessioned2023-06-01T15:31:38Z
dc.date.accessioned2025-09-09T01:23:20Z
dc.date.available2023-06-01T15:31:38Z
dc.date.issued2017
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.3390/molecules22071091
dc.identifier.issn1420-3049
dc.identifier.urihttps://hdl.handle.net/1843/54299
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofMolecules
dc.rightsAcesso Aberto
dc.subjectQuímica da biomassa
dc.subjectOleo de ricino
dc.subjectOleo de mamona
dc.subjectGlicerina
dc.subjectPolímeros
dc.subjectPolióis
dc.subject.otherPolyurethane foams
dc.subject.otherCastor oil
dc.subject.otherCrude glycerol
dc.subject.otherBiopolyols
dc.subject.otherThermal insulator
dc.titlePolyurethane foams for thermal insulation uses produced from castor oil and crude glycerol biopolyols
dc.typeArtigo de periódico
local.citation.issue7
local.citation.volume22
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-2510-3845
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.mdpi.com/1420-3049/22/7/1091

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