Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/24553
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dc.contributor.authorGamelas, José A.F.-
dc.contributor.authorDuarte, Gustavo V.-
dc.contributor.authorFerreira, Paulo J.-
dc.date.accessioned2013-11-20T13:07:15Z-
dc.date.available2013-11-20T13:07:15Z-
dc.date.issued2013-11-
dc.identifier.citationGAMELAS, J.: DUARTE, G.; FERREIRA, P. - Inverse gas chromatography and XPS of extracted kraft pulps. Holzforschung. 67: 3 (2012), 239-355. Disponível na WWW: http://hdl.handle.net/10316/24553por
dc.identifier.urihttp://hdl.handle.net/10316/24553-
dc.description.abstractKraft pulps at the kappa number level of 15 obtained from Acer saccharum (sugar maple) and Eucalyptus globulus prepared with and without hot water pre-extraction (HWE) were analysed by inverse gas chromatography (IGC) and X-ray photoelectron spectroscopy (XPS). In the case of A. saccharum pulps, the dispersive component of the surface energy (γsd) at 40ºC determined by IGC was 39.8 mJ m-2 (control pulp without HWE) and 36.7 mJ m-2 (HWE pulp). E. globulus pulps resulted in γsd values of 30.8 mJ m-2 (control) and 34.9 mJ m-2 (HWE). The higher values of γsd for sugar maple pulps were interpreted as the influence of lower amounts of extractives and lignin at their surface, as revealed by XPS. It is also discussed why the acid-base character of the sugar maple pulp surface was slightly reduced with previous hot water extraction while for E. globulus it was greatly enhanced.por
dc.language.isoengpor
dc.rightsopenAccesspor
dc.subjectAcid-base characterpor
dc.subjectXPSpor
dc.subjectE. globuluspor
dc.subjectIGCpor
dc.subjectSugar maplepor
dc.subjectSurface propertiespor
dc.titleInverse gas chromatography and XPS of extracted kraft pulpspor
dc.typearticlepor
degois.publication.firstPage273por
degois.publication.lastPage276por
degois.publication.issue3por
degois.publication.titleHolzforschungpor
dc.peerreviewedYespor
dc.identifier.doi10.1515/hf-2012-0126-
degois.publication.volume67por
item.fulltextSem Texto completo-
item.languageiso639-1en-
item.grantfulltextnone-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCIEPQPF – Chemical Process Engineering and Forest Products Research Centre-
crisitem.author.researchunitCIEPQPF – Chemical Process Engineering and Forest Products Research Centre-
crisitem.author.orcid0000-0002-1474-767X-
crisitem.author.orcid0000-0002-4503-6811-
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais
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