Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties

Detalhes bibliográficos
Autor(a) principal: Nacas,Amanda Martins
Data de Publicação: 2019
Outros Autores: Chinellato,Anne Cristine, Santos,Demetrio Jackson dos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316
Resumo: ABSTRACT Polyol structure can be affected by the catalyst used for its synthesis and may affect the curing kinetics and mechanical strength of the final polyurethane (PU). This work aimed to study the influence of catalyst concentration on the structure of bio-based polyols and on the final properties of the polyurethane adhesive obtained from these polyols. Polyols were investigated by Fourier transform infrared (FTIR), gel permeation chromatography (GPC) and hydroxyl index analysis, with the purpose of investigating the polyols chemical state after the synthesis. Results suggest that higher catalyst concentration led to polyols with higher hydroxyl index and other differences in the polyols structure. The influence of the catalysts concentration on the cure kinetics of the polyurethanes was verified using the Fourier transform infrared (FTIR). In addition, peel strength of PU adhesives was obtained by increasing catalyst concentration on polyol synthesis.
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spelling Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives propertiesBio-polyolcatalystadhesivespolyurethaneABSTRACT Polyol structure can be affected by the catalyst used for its synthesis and may affect the curing kinetics and mechanical strength of the final polyurethane (PU). This work aimed to study the influence of catalyst concentration on the structure of bio-based polyols and on the final properties of the polyurethane adhesive obtained from these polyols. Polyols were investigated by Fourier transform infrared (FTIR), gel permeation chromatography (GPC) and hydroxyl index analysis, with the purpose of investigating the polyols chemical state after the synthesis. Results suggest that higher catalyst concentration led to polyols with higher hydroxyl index and other differences in the polyols structure. The influence of the catalysts concentration on the cure kinetics of the polyurethanes was verified using the Fourier transform infrared (FTIR). In addition, peel strength of PU adhesives was obtained by increasing catalyst concentration on polyol synthesis.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316Matéria (Rio de Janeiro) v.24 n.3 2019reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620190003.0716info:eu-repo/semantics/openAccessNacas,Amanda MartinsChinellato,Anne CristineSantos,Demetrio Jackson doseng2019-09-11T00:00:00Zoai:scielo:S1517-70762019000300316Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2019-09-11T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
title Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
spellingShingle Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
Nacas,Amanda Martins
Bio-polyol
catalyst
adhesives
polyurethane
title_short Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
title_full Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
title_fullStr Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
title_full_unstemmed Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
title_sort Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties
author Nacas,Amanda Martins
author_facet Nacas,Amanda Martins
Chinellato,Anne Cristine
Santos,Demetrio Jackson dos
author_role author
author2 Chinellato,Anne Cristine
Santos,Demetrio Jackson dos
author2_role author
author
dc.contributor.author.fl_str_mv Nacas,Amanda Martins
Chinellato,Anne Cristine
Santos,Demetrio Jackson dos
dc.subject.por.fl_str_mv Bio-polyol
catalyst
adhesives
polyurethane
topic Bio-polyol
catalyst
adhesives
polyurethane
description ABSTRACT Polyol structure can be affected by the catalyst used for its synthesis and may affect the curing kinetics and mechanical strength of the final polyurethane (PU). This work aimed to study the influence of catalyst concentration on the structure of bio-based polyols and on the final properties of the polyurethane adhesive obtained from these polyols. Polyols were investigated by Fourier transform infrared (FTIR), gel permeation chromatography (GPC) and hydroxyl index analysis, with the purpose of investigating the polyols chemical state after the synthesis. Results suggest that higher catalyst concentration led to polyols with higher hydroxyl index and other differences in the polyols structure. The influence of the catalysts concentration on the cure kinetics of the polyurethanes was verified using the Fourier transform infrared (FTIR). In addition, peel strength of PU adhesives was obtained by increasing catalyst concentration on polyol synthesis.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1517-707620190003.0716
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.24 n.3 2019
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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