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

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 properti...

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Detalles Bibliográficos
Autores: Nacas,Amanda Martins, Chinellato,Anne Cristine, Santos,Demetrio Jackson dos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:Brasil
Institución:Matéria (Rio de Janeiro. Online)
Repositorio:Matéria (Rio de Janeiro. Online)
Idioma:inglés
OAI Identifier:oai:scielo:S1517-70762019000300316
Acceso en línea:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316
Access Level:acceso abierto
Palabra clave:Bio-polyol
catalyst
adhesives
polyurethane
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oai_identifier_str oai:scielo:S1517-70762019000300316
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spelling Lithium catalyst concentration influence on bio-polyols structure and polyurethane adhesives properties Nacas,Amanda Martins Chinellato,Anne Cristine Santos,Demetrio Jackson dos Bio-polyol catalyst adhesives polyurethane 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. Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316
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
topic Bio-polyol
catalyst
adhesives
polyurethane
topic_facet 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
format article
status_str publishedVersion
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000300316
language eng
eu_rights_str_mv openAccess
publisher Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
institution RLAM
collection Matéria (Rio de Janeiro. Online)
reponame_str Matéria (Rio de Janeiro. Online)
instname_str Matéria (Rio de Janeiro. Online)
_version_ 1878419753272344576
publishDateSort 2019
author_browse Chinellato,Anne Cristine
Nacas,Amanda Martins
Santos,Demetrio Jackson dos
publisherStr Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
score 6,9303427

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