Production and characterization of polyurethane foams from a simple mixture of castor oil, crude glycerol and untreated lignin as bio-based polyols

Página do item simplificado
dc.creatorCamila Santana Carriço
dc.creatorThaís Fraga
dc.creatorVânya Márcia Duarte Pasa
dc.date.accessioned2023-05-31T18:31:41Z
dc.date.accessioned2025-09-09T01:33:34Z
dc.date.available2023-05-31T18:31:41Z
dc.date.issued2016-12
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.identifier.doihttps://doi.org/10.1016/j.eurpolymj.2016.10.012
dc.identifier.issn1873-1945
dc.identifier.urihttps://hdl.handle.net/1843/54244
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEuropean Polymer Journal
dc.rightsAcesso Restrito
dc.subjectQuímica da biomassa
dc.subjectLignina
dc.subjectOleo de ricino
dc.subjectOleo de mamona
dc.subjectGlicerina
dc.subjectPolímeros
dc.subjectPolióis
dc.subjectBiomassa
dc.subject.otherPolyurethane foams
dc.subject.otherLignin
dc.subject.otherCrude glycerol
dc.subject.otherCastor oil
dc.titleProduction and characterization of polyurethane foams from a simple mixture of castor oil, crude glycerol and untreated lignin as bio-based polyols
dc.typeArtigo de periódico
local.citation.epage61
local.citation.spage53
local.citation.volume85
local.description.resumoPolyurethane foams from bio-based polyols have been studied to produce sustainable and eco-friendly materials from biomass industrial wastes. Semi-rigid polyurethane foams were synthesized from physical mixtures of kraft lignin, castor oil and residual glycerol. The influence of different lignin contents (10, 12.5, 15, 17.5, 20, 25, 30 and 40%) on the foam properties was evaluated. An increase in the density and a decrease in the thermal stability were observed upon an increasing amount of lignin. The foam synthesized with 17.5% lignin showed better dimensional and thermal properties as well as the best cell homogeneity and this formulation was chosen for further investigation of the effects of the castor oil content, isocyanate/hydroxyl molar ratio (NCO/OH) and the blowing agent type. Increased foam densities and compressive strengths were observed with increased castor oil content in the foams. Similar results were observed upon increasing the NCO/OH molar ratio due to the higher amount of crosslinking reactions. The evaluation of the blowing agent effect showed that using cyclopentane and n-pentane, the foams showed higher densities and lower compressive strengths in comparison to the foams synthesized with the chemical blowing agent (water). This result can be explained by the faster volatilization of these organic blowing agents, producing smaller cells in comparison to the CO2 generated by the reaction of water with isocyanate. Green polyurethane foams with good properties and industrial interest were produced using a mixture of residual raw materials (glycerol and lignin) and castor oil as bio-based polyols.
local.identifier.orcidhttps://orcid.org/0000-0002-2510-3845
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0014305716304116

Arquivos

Licença do pacote

Agora exibindo 1 - 1 de 1
Imagem de Miniatura
Nome:
License.txt
Tamanho:
1.99 KB
Formato:
Plain Text
Descrição:
Baixar

Coleções

Artigo de Periódico

Logo UFMG