Publication
Rigid polyurethane foams from lignin based polyols
| dc.contributor.author | Cateto, Carolina | |
| dc.contributor.author | Barreiro, M.F. | |
| dc.contributor.author | Rodrigues, Alírio | |
| dc.contributor.author | Belgacem, Mohamed Naceur | |
| dc.date.accessioned | 2010-01-24T13:48:02Z | |
| dc.date.available | 2010-01-24T13:48:02Z | |
| dc.date.issued | 2008 | |
| dc.description.abstract | Rigid polyurethane (RPU) foams were synthesized using lignin-based polyols obtained by an oxypropylation process. Alcell, Indulin AT, Curan 27-11P and Sarkanda lignins have been oxypropylated using formulations deduced from an optimization study with Alcell. L/PO/C (ratio between lignin, PO and catalyst content) of 30/70/2 and 20/80/5 were used to obtain the desired polyols. The resulting RPU foams were characterized in terms of density, mechanical properties, conductivity and morphology. All Sarkanda lignin based polyols and the 30/70/2 Curan 27-11P polyol were found inadequate for RPU formulations. Alcell and Indulin AT based polyols and the 20/80/5 Curan 27-11P polyol resulted in RPU foams with properties very similar to those obtained from conventional commercial polyols. RPU foams produced with the 30/70/2 Alcell and the 30/70/2 Indulin AT polyols exhibited improved properties compared with those from 20/80/5 based formulations. | pt |
| dc.description.sponsorship | Foundation for Science and Technology (grant SFRH/BD/18415/2004) and the French-Portuguese Scientific Cooperation Programme (action F-32/08) | pt |
| dc.identifier.citation | Cateto, C.A.; Barreiro, M.F.; Rodrigues, A.E.; Belgacem, M.N. (2008). Rigid polyurethane foams from lignin based polyols. In IVth AIP Conferences Proceedings. ISSN 0094-243X. 1042:1. International Conference on times of polymers (TOP) and composites. Ischida, Italy. ISBN 978-0-7354-0570-7 | pt |
| dc.identifier.isbn | 978-0-7354-0570-7 | |
| dc.identifier.issn | 0094-243X | |
| dc.identifier.uri | http://hdl.handle.net/10198/1430 | |
| dc.language.iso | eng | pt |
| dc.publisher | AIP - American Institute of Physics | pt |
| dc.relation.ispartofseries | 1042; | |
| dc.subject | Lignin | pt |
| dc.subject | Biopolyols | pt |
| dc.subject | Polyurehane foams | pt |
| dc.title | Rigid polyurethane foams from lignin based polyols | pt |
| dc.type | conference paper | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Ischida | pt |
| oaire.citation.endPage | 245 | pt |
| oaire.citation.startPage | 243 | pt |
| oaire.citation.title | IVth International Conference on times of polymers (TOP) and composites | pt |
| person.familyName | Barreiro | |
| person.givenName | Filomena | |
| person.identifier.ciencia-id | 3418-47D5-5746 | |
| person.identifier.orcid | 0000-0002-6844-333X | |
| person.identifier.rid | L-9802-2014 | |
| person.identifier.scopus-author-id | 57188719717 | |
| rcaap.rights | openAccess | pt |
| rcaap.type | conferenceObject | pt |
| relation.isAuthorOfPublication | 0391987c-ba90-488b-839a-153447ce1f0f | |
| relation.isAuthorOfPublication.latestForDiscovery | 0391987c-ba90-488b-839a-153447ce1f0f |