Urethanes and polyurethanes from suberin: 1. Kinetic study

Detalhes bibliográficos
Autor(a) principal: Cordeiro, Nereida
Data de Publicação: 1997
Outros Autores: Belgacem, Mohamed Naceur, Gandini, Alessandro, Neto, Carlos Pascoal
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.13/3372
Resumo: Within the context of a study on the preparation and the characterization of polyurethanes based on suberin, as a polyol, and conventional polyisocyanates, it was deemed necessary to carry out a preliminary study on the reactivity of the hydroxy functions of suberin. Aliphatic and aromatic mono- and di-isocyanates were tested and the kinetics of this system followed the classical second order up to conversions of about 85%. The influence of the steric hindrance and the electronic factors, linked to the specific structures of both types of isocyanates, was established.
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spelling Urethanes and polyurethanes from suberin: 1. Kinetic studySuberinUrethane and polyurethanesIsocyanatesReaction kinetics.Faculdade de Ciências Exatas e da EngenhariaWithin the context of a study on the preparation and the characterization of polyurethanes based on suberin, as a polyol, and conventional polyisocyanates, it was deemed necessary to carry out a preliminary study on the reactivity of the hydroxy functions of suberin. Aliphatic and aromatic mono- and di-isocyanates were tested and the kinetics of this system followed the classical second order up to conversions of about 85%. The influence of the steric hindrance and the electronic factors, linked to the specific structures of both types of isocyanates, was established.ElsevierDigitUMaCordeiro, NereidaBelgacem, Mohamed NaceurGandini, AlessandroNeto, Carlos Pascoal2021-05-06T09:47:53Z1997-01-01T00:00:00Z1997-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.13/3372engCordeiro, N., Belgacem, M. N., Gandini, A., & Neto, C. P. (1997). Urethanes and polyurethanes from suberin: 1. Kinetic study. Industrial Crops and Products, 6(2), 163-167.10.1016/S0926-6690(96)00212-9info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-05T12:56:20Zoai:digituma.uma.pt:10400.13/3372Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:06:25.494924Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Urethanes and polyurethanes from suberin: 1. Kinetic study
title Urethanes and polyurethanes from suberin: 1. Kinetic study
spellingShingle Urethanes and polyurethanes from suberin: 1. Kinetic study
Cordeiro, Nereida
Suberin
Urethane and polyurethanes
Isocyanates
Reaction kinetics
.
Faculdade de Ciências Exatas e da Engenharia
title_short Urethanes and polyurethanes from suberin: 1. Kinetic study
title_full Urethanes and polyurethanes from suberin: 1. Kinetic study
title_fullStr Urethanes and polyurethanes from suberin: 1. Kinetic study
title_full_unstemmed Urethanes and polyurethanes from suberin: 1. Kinetic study
title_sort Urethanes and polyurethanes from suberin: 1. Kinetic study
author Cordeiro, Nereida
author_facet Cordeiro, Nereida
Belgacem, Mohamed Naceur
Gandini, Alessandro
Neto, Carlos Pascoal
author_role author
author2 Belgacem, Mohamed Naceur
Gandini, Alessandro
Neto, Carlos Pascoal
author2_role author
author
author
dc.contributor.none.fl_str_mv DigitUMa
dc.contributor.author.fl_str_mv Cordeiro, Nereida
Belgacem, Mohamed Naceur
Gandini, Alessandro
Neto, Carlos Pascoal
dc.subject.por.fl_str_mv Suberin
Urethane and polyurethanes
Isocyanates
Reaction kinetics
.
Faculdade de Ciências Exatas e da Engenharia
topic Suberin
Urethane and polyurethanes
Isocyanates
Reaction kinetics
.
Faculdade de Ciências Exatas e da Engenharia
description Within the context of a study on the preparation and the characterization of polyurethanes based on suberin, as a polyol, and conventional polyisocyanates, it was deemed necessary to carry out a preliminary study on the reactivity of the hydroxy functions of suberin. Aliphatic and aromatic mono- and di-isocyanates were tested and the kinetics of this system followed the classical second order up to conversions of about 85%. The influence of the steric hindrance and the electronic factors, linked to the specific structures of both types of isocyanates, was established.
publishDate 1997
dc.date.none.fl_str_mv 1997-01-01T00:00:00Z
1997-01-01T00:00:00Z
2021-05-06T09:47:53Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.13/3372
url http://hdl.handle.net/10400.13/3372
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Cordeiro, N., Belgacem, M. N., Gandini, A., & Neto, C. P. (1997). Urethanes and polyurethanes from suberin: 1. Kinetic study. Industrial Crops and Products, 6(2), 163-167.
10.1016/S0926-6690(96)00212-9
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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