Publicação
Kinetic study of the formation of lignin-based polyurethanes in bulk
| Resumo: | The formation of lignin-based polyurethanes was monitored by Fourier transform infrared spectroscopy working in attenuated total reflectance mode (FTIR-ATR) and kinetics was analyzed according to a global second order model. The used chemical system consisted of 4,40-methylene-diphenylene diisocyanate (MDI), polycaprolactone (PCL) of three different average-molecular weights (400, 750 and 1000) and two lignin (L) samples (Alcell (A) and Indulin AT (IAT)), incorporated at different weight contents (10%, 15%, 20% and 25%) in the polyol mixture. The polymerization reaction was carried in bulk and without the presence of any catalyst. Results showed that isocyanate conversion decreases with the increase of both lignin content and PCL molecular weight. Moreover, the Indulin AT series leaded to lower isocyanate conversions compared to Alcell counterparts. The global second order treatment showed to be dependent of lignin type and content as well as PCL molecular weight. In fact, for the studied system this model was found to be more adequate for low lignin contents. After the region of linearity, a negative deviation was always observed and found to be more pronounced with increasing the lignin content. |
|---|---|
| Autores principais: | Cateto, Carolina |
| Outros Autores: | Barreiro, M.F.; Rodrigues, Alírio; Belgacem, Mohamed Naceur |
| Assunto: | Lignin Polyurethanes FTIR monitoring Kinetics |
| Ano: | 2011 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| _version_ | 1867173026569650176 |
|---|---|
| author | Cateto, Carolina |
| author2 | Barreiro, M.F. Rodrigues, Alírio Belgacem, Mohamed Naceur |
| author2_role | author author author |
| author_facet | Cateto, Carolina Barreiro, M.F. Rodrigues, Alírio Belgacem, Mohamed Naceur |
| author_role | author |
| contributor_name_str_mv | Biblioteca Digital do IPB |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Cateto, Carolina\"},{\"Person.name\":\"Barreiro, M.F.\",\"Person.identifier.orcid\":\"0000-0002-6844-333X\"},{\"Person.name\":\"Rodrigues, Alírio\"},{\"Person.name\":\"Belgacem, Mohamed Naceur\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Biblioteca Digital do IPB |
| datacite.creators.creator.creatorName.fl_str_mv | Cateto, Carolina Barreiro, M.F. Rodrigues, Alírio Belgacem, Mohamed Naceur |
| datacite.date.Accepted.fl_str_mv | 2011-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2011-06-30T10:42:10Z |
| datacite.date.embargoed.fl_str_mv | 2011-06-30T10:42:10Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| datacite.subjects.subject.fl_str_mv | Lignin Polyurethanes FTIR monitoring Kinetics |
| datacite.titles.title.fl_str_mv | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| dc.contributor.none.fl_str_mv | Biblioteca Digital do IPB |
| dc.creator.none.fl_str_mv | Cateto, Carolina Barreiro, M.F. Rodrigues, Alírio Belgacem, Mohamed Naceur |
| dc.date.Accepted.fl_str_mv | 2011-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2011-06-30T10:42:10Z |
| dc.date.embargoed.fl_str_mv | 2011-06-30T10:42:10Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10198/5476 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_16ec |
| dc.subject.none.fl_str_mv | Lignin Polyurethanes FTIR monitoring Kinetics |
| dc.title.fl_str_mv | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | The formation of lignin-based polyurethanes was monitored by Fourier transform infrared spectroscopy working in attenuated total reflectance mode (FTIR-ATR) and kinetics was analyzed according to a global second order model. The used chemical system consisted of 4,40-methylene-diphenylene diisocyanate (MDI), polycaprolactone (PCL) of three different average-molecular weights (400, 750 and 1000) and two lignin (L) samples (Alcell (A) and Indulin AT (IAT)), incorporated at different weight contents (10%, 15%, 20% and 25%) in the polyol mixture. The polymerization reaction was carried in bulk and without the presence of any catalyst. Results showed that isocyanate conversion decreases with the increase of both lignin content and PCL molecular weight. Moreover, the Indulin AT series leaded to lower isocyanate conversions compared to Alcell counterparts. The global second order treatment showed to be dependent of lignin type and content as well as PCL molecular weight. In fact, for the studied system this model was found to be more adequate for low lignin contents. After the region of linearity, a negative deviation was always observed and found to be more pronounced with increasing the lignin content. |
| dirty | 0 |
| eu_rights_str_mv | restrictedAccess |
| format | article |
| fulltext.url.fl_str_mv | https://bibliotecadigital.ipb.pt/bitstreams/06250ea6-3ff6-42bf-87ac-35718dff56f6/download |
| funding.funder.alternateName_str_mv | FCT |
| funding.funder.identifier_str_mv | http://doi.org/10.13039/501100001871 |
| funding.funder.name_str_mv | Fundação para a Ciência e a Tecnologia |
| id | ipb_a8bd237c98b60eddb7bd53398128bdef |
| identifier.url.fl_str_mv | http://hdl.handle.net/10198/5476 |
| instacron_str | ipb |
| institution | Instituto Politécnico de Bragança |
| instname_str | Instituto Politécnico de Bragança |
| language | eng |
| network_acronym_str | ipb |
| network_name_str | Biblioteca Digital do IPB |
| oai_identifier_str | oai:bibliotecadigital.ipb.pt:10198/5476 |
| organization_str_mv | urn:organizationAcronym:ipb |
| person_str_mv | Cateto, Carolina Barreiro, M.F. Barreiro, M.F. https://www.ciencia-id.pt/3418-47D5-5746 3418-47D5-5746 http://orcid.org/0000-0002-6844-333X 0000-0002-6844-333X Rodrigues, Alírio Belgacem, Mohamed Naceur |
| publishDate | 2011 |
| publisher.none.fl_str_mv | Elsevier |
| reponame_str | Biblioteca Digital do IPB |
| repository_id_str | urn:repositoryAcronym:ipb |
| service_str_mv | urn:repositoryAcronym:ipb |
| spelling | engElsevierporThe formation of lignin-based polyurethanes was monitored by Fourier transform infrared spectroscopy working in attenuated total reflectance mode (FTIR-ATR) and kinetics was analyzed according to a global second order model. The used chemical system consisted of 4,40-methylene-diphenylene diisocyanate (MDI), polycaprolactone (PCL) of three different average-molecular weights (400, 750 and 1000) and two lignin (L) samples (Alcell (A) and Indulin AT (IAT)), incorporated at different weight contents (10%, 15%, 20% and 25%) in the polyol mixture. The polymerization reaction was carried in bulk and without the presence of any catalyst. Results showed that isocyanate conversion decreases with the increase of both lignin content and PCL molecular weight. Moreover, the Indulin AT series leaded to lower isocyanate conversions compared to Alcell counterparts. The global second order treatment showed to be dependent of lignin type and content as well as PCL molecular weight. In fact, for the studied system this model was found to be more adequate for low lignin contents. After the region of linearity, a negative deviation was always observed and found to be more pronounced with increasing the lignin content.application/pdfporKinetic study of the formation of lignin-based polyurethanes in bulkCateto, CarolinaPersonalBarreiro, M.F.DSpacehttp://dspace.org/items/0391987c-ba90-488b-839a-153447ce1f0fDSpacehttp://dspace.org/items/0391987c-ba90-488b-839a-153447ce1f0fBarreiroFilomenaCiência IDhttps://www.ciencia-id.pt3418-47D5-5746ORCIDhttp://orcid.org0000-0002-6844-333XResearcher IDhttps://www.researcherid.comL-9802-2014Scopus Author IDhttps://www.scopus.com57188719717Rodrigues, AlírioBelgacem, Mohamed NaceurHostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.ptISSNIsPartOf1381-5148DOIIsPartOf10.1016/j.reactfunctpolym.2011.05.0072011-06-30T10:42:10Z20112011-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/5476http://purl.org/coar/access_right/c_16ecrestricted accessLigninPolyurethanesFTIR monitoringKinetics1019791 bytesFundação para a Ciência e a TecnologiaPOLIURETANOS DERIVADOS DA LENHINA: FORMAÇÃO, CARACTERIZAÇÃO E APLICAÇÕESCrossref Funder IDhttp://doi.org/10.13039/501100001871literaturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_16ecapplication/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/06250ea6-3ff6-42bf-87ac-35718dff56f6/downloadReactive and Functional Polymers863869 |
| spellingShingle | Kinetic study of the formation of lignin-based polyurethanes in bulk Cateto, Carolina Lignin Polyurethanes FTIR monitoring Kinetics |
| status | SINGLETON |
| subject.fl_str_mv | Lignin Polyurethanes FTIR monitoring Kinetics |
| title | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| title_full | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| title_fullStr | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| title_full_unstemmed | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| title_short | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| title_sort | Kinetic study of the formation of lignin-based polyurethanes in bulk |
| topic | Lignin Polyurethanes FTIR monitoring Kinetics |
| topic_facet | Lignin Polyurethanes FTIR monitoring Kinetics |
| url | http://hdl.handle.net/10198/5476 |
| visible | 1 |