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Effects of autohydrolysis of Eucalyptus urograndis and Eucalyptus grandis on influence of chemical components and crystallinity index

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dc.contributor.authorda Silva Morais, Alaine Patrícia [UNESP]
dc.contributor.authorSansígolo, Cláudio Angeli [UNESP]
dc.contributor.authorde Oliveira Neto, Mario [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:02:51Z
dc.date.available2018-12-11T17:02:51Z
dc.date.issued2016-08-01
dc.description.abstractSamples of Eucalyptus urograndis and Eucalyptus grandis sawdust were autohydrolyzed in aqueous conditions to reach temperatures in the range 110-190 °C and reaction times of 0-150 min in a minireactor. In each minireactor were used a liquor:wood ratio (10:1 L:kg dry wood), in order to assess the effects of the autohydrolysis severity and the crystalline properties of cellulose. The content of extractives, lignin, holocellulose, cellulose, hemicelluloses and crystallinity index obtained from the solid fraction after autohydrolysis of sawdust were determined. This study demonstrated that the hemicelluloses were extensively removed at 170 and 190 °C, whereas cellulose was partly degraded to Eucalyptus urograndis and Eucalyptus grandis sawdust. The lignin content decreased, while the extractives content increased. It was defined that during autohydrolysis, had a slight decreased on crystalline structure of cellulose of Eucalyptus urogandis and Eucalyptus grandis.en
dc.description.affiliationLaboratório de Celulose e Papel Departamento de Ciência Florestal Faculdade de Ciências Agronômicas/UNESP, Faz Experimental Lageado, Jose Barbosa de Barros, 1780
dc.description.affiliationDepartamento de Física e Biofísica Instituto de Biociências UNESP, Distrito de Rubião Júnior, S/N
dc.description.affiliationUnespLaboratório de Celulose e Papel Departamento de Ciência Florestal Faculdade de Ciências Agronômicas/UNESP, Faz Experimental Lageado, Jose Barbosa de Barros, 1780
dc.description.affiliationUnespDepartamento de Física e Biofísica Instituto de Biociências UNESP, Distrito de Rubião Júnior, S/N
dc.format.extent623-628
dc.identifierhttp://dx.doi.org/10.1016/j.biortech.2016.04.124
dc.identifier.citationBioresource Technology, v. 214, p. 623-628.
dc.identifier.doi10.1016/j.biortech.2016.04.124
dc.identifier.file2-s2.0-84966874280.pdf
dc.identifier.issn1873-2976
dc.identifier.issn0960-8524
dc.identifier.scopus2-s2.0-84966874280
dc.identifier.urihttp://hdl.handle.net/11449/172948
dc.language.isoeng
dc.relation.ispartofBioresource Technology
dc.relation.ispartofsjr2,029
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAutohydrolysis
dc.subjectChemical components
dc.subjectCrystallinity
dc.subjectEucalyptus grandis
dc.subjectEucalyptus urograndis
dc.titleEffects of autohydrolysis of Eucalyptus urograndis and Eucalyptus grandis on influence of chemical components and crystallinity indexen
dc.typeArtigo
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Botucatupt
unesp.departmentCiência Florestal - FCApt
unesp.departmentFísica e Biofísica - IBBpt

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