Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/4300 |
Resumo: | Available at SciVerse ScienceDirect |
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Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopyQuercus cerriscorkheat treatmentcolour analysisFTIRAvailable at SciVerse ScienceDirectA study of chemical transformations of cork during heat treatments was made using colour variation and FTIR analysis. The cork enriched fractions from Quercus cerris bark were subjected to isothermal heating in the temperature range 150–400 ◦C and treatment time from 5 to 90 min. Mass loss ranged from 3% (90 min at 150 ◦C) to 71% (60 min at 350 ◦C). FTIR showed that hemicelluloses were thermally degraded first while suberin remained as the most heat resistant component. The change of CIE-Lab parameters was rapid for low intensity treatments where no significant mass loss occurred (at 150 ◦C L* decreased from the initial 51.5 to 37.3 after 20 min). The decrease in all colour parameters continued with temperature until they remained substantially constant with over 40% mass loss. Modelling of the thermally induced mass loss could be made using colour analysis. This is applicable to monitoring the production of heat expanded insulation agglomerates.ElsevierRepositório da Universidade de LisboaSen, AliMarques, António VelezGominho, JorgePereira, Helena2012-04-27T10:11:52Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/4300eng"Industrial Crops and Products". ISSN 0926-6690. 38 (2012) 132-1380926-6690info: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:RCAAP2023-03-06T14:35:18Zoai:www.repository.utl.pt:10400.5/4300Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:51:59.683251Repositório 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 |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
title |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
spellingShingle |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy Sen, Ali Quercus cerris cork heat treatment colour analysis FTIR |
title_short |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
title_full |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
title_fullStr |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
title_full_unstemmed |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
title_sort |
Study of thermochemical treatments of cork in the 150-400ºC range using colour analysis and FTIR spectroscopy |
author |
Sen, Ali |
author_facet |
Sen, Ali Marques, António Velez Gominho, Jorge Pereira, Helena |
author_role |
author |
author2 |
Marques, António Velez Gominho, Jorge Pereira, Helena |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Sen, Ali Marques, António Velez Gominho, Jorge Pereira, Helena |
dc.subject.por.fl_str_mv |
Quercus cerris cork heat treatment colour analysis FTIR |
topic |
Quercus cerris cork heat treatment colour analysis FTIR |
description |
Available at SciVerse ScienceDirect |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-04-27T10:11:52Z 2012 2012-01-01T00:00:00Z |
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/10400.5/4300 |
url |
http://hdl.handle.net/10400.5/4300 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Industrial Crops and Products". ISSN 0926-6690. 38 (2012) 132-138 0926-6690 |
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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799130996091650048 |