Monitoring of lignin-based polyurethane synthesis by FTIR-ATR

Detalhes bibliográficos
Autor(a) principal: Cateto, Carolina
Data de Publicação: 2008
Outros Autores: Barreiro, M.F., Rodrigues, Alírio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/1404
Resumo: FTIR-ATR (Fourier Transform Infrared Spectroscopy working in the mode of Attenuated Total Reflectance) was applied to study the formation of lignin-based polyurethanes. Although some studies related to the use of lignin in polyurethane synthesis, are available in literature, still persist a gap for a systematic study of this kind of systems, involving the measurement of kinetic data, modelling and optimization of the polymerization process. The present methodology allows the test of different formulations at a scale of 3–5 g, considering several process variables: temperature, NCO/OH ratio, type and average molecular weight of the polyol, type of isocyanate, type and weight content of lignin. This work aims to describe the methodology used to perform the FTIR experiments by presenting a case study. The polyurethane samples have been prepared starting with 4,4′-methylene-diphenylene isocyanate (MDI), policaprolactonediol (PCL) of three different average molecular weights (1000, 750 and 400) and a commercial lignin (Indulin AT from Meadwestvaco) at different weight contents (10, 15, 20 and 25%). The results obtained in this work point out for the validation of the proposed experimental technique and confirm that lignin was incorporated in the final three-component polyurethane sample by chemical reaction with isocyanates, i.e., formation of urethane linkages.
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spelling Monitoring of lignin-based polyurethane synthesis by FTIR-ATRLigninPolyurethaneSynthesisFTIR-ATRFTIR-ATR (Fourier Transform Infrared Spectroscopy working in the mode of Attenuated Total Reflectance) was applied to study the formation of lignin-based polyurethanes. Although some studies related to the use of lignin in polyurethane synthesis, are available in literature, still persist a gap for a systematic study of this kind of systems, involving the measurement of kinetic data, modelling and optimization of the polymerization process. The present methodology allows the test of different formulations at a scale of 3–5 g, considering several process variables: temperature, NCO/OH ratio, type and average molecular weight of the polyol, type of isocyanate, type and weight content of lignin. This work aims to describe the methodology used to perform the FTIR experiments by presenting a case study. The polyurethane samples have been prepared starting with 4,4′-methylene-diphenylene isocyanate (MDI), policaprolactonediol (PCL) of three different average molecular weights (1000, 750 and 400) and a commercial lignin (Indulin AT from Meadwestvaco) at different weight contents (10, 15, 20 and 25%). The results obtained in this work point out for the validation of the proposed experimental technique and confirm that lignin was incorporated in the final three-component polyurethane sample by chemical reaction with isocyanates, i.e., formation of urethane linkages.ElsevierBiblioteca Digital do IPBCateto, CarolinaBarreiro, M.F.Rodrigues, Alírio2010-01-22T15:43:08Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/1404engengCateto, C.A.; Barreiro, M.F.; Rodrigues, A.E. (2008). Monitoring of lignin-based polyurethane synthesis by FTIR-ATR. Industrial Crops and Products. ISSN 0926-6690. 27:2, p.168-1740926-669010.1016/j.indcrop.2007.07.018info: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:RCAAP2023-11-21T10:04:32Zoai:bibliotecadigital.ipb.pt:10198/1404Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:54:43.448606Repositório 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 Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
title Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
spellingShingle Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
Cateto, Carolina
Lignin
Polyurethane
Synthesis
FTIR-ATR
title_short Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
title_full Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
title_fullStr Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
title_full_unstemmed Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
title_sort Monitoring of lignin-based polyurethane synthesis by FTIR-ATR
author Cateto, Carolina
author_facet Cateto, Carolina
Barreiro, M.F.
Rodrigues, Alírio
author_role author
author2 Barreiro, M.F.
Rodrigues, Alírio
author2_role author
author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Cateto, Carolina
Barreiro, M.F.
Rodrigues, Alírio
dc.subject.por.fl_str_mv Lignin
Polyurethane
Synthesis
FTIR-ATR
topic Lignin
Polyurethane
Synthesis
FTIR-ATR
description FTIR-ATR (Fourier Transform Infrared Spectroscopy working in the mode of Attenuated Total Reflectance) was applied to study the formation of lignin-based polyurethanes. Although some studies related to the use of lignin in polyurethane synthesis, are available in literature, still persist a gap for a systematic study of this kind of systems, involving the measurement of kinetic data, modelling and optimization of the polymerization process. The present methodology allows the test of different formulations at a scale of 3–5 g, considering several process variables: temperature, NCO/OH ratio, type and average molecular weight of the polyol, type of isocyanate, type and weight content of lignin. This work aims to describe the methodology used to perform the FTIR experiments by presenting a case study. The polyurethane samples have been prepared starting with 4,4′-methylene-diphenylene isocyanate (MDI), policaprolactonediol (PCL) of three different average molecular weights (1000, 750 and 400) and a commercial lignin (Indulin AT from Meadwestvaco) at different weight contents (10, 15, 20 and 25%). The results obtained in this work point out for the validation of the proposed experimental technique and confirm that lignin was incorporated in the final three-component polyurethane sample by chemical reaction with isocyanates, i.e., formation of urethane linkages.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2010-01-22T15:43:08Z
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/10198/1404
url http://hdl.handle.net/10198/1404
dc.language.iso.fl_str_mv eng
eng
language eng
dc.relation.none.fl_str_mv Cateto, C.A.; Barreiro, M.F.; Rodrigues, A.E. (2008). Monitoring of lignin-based polyurethane synthesis by FTIR-ATR. Industrial Crops and Products. ISSN 0926-6690. 27:2, p.168-174
0926-6690
10.1016/j.indcrop.2007.07.018
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)
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