Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/15599
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dc.contributor.authorJosé A. F., Gamelas-
dc.contributor.authorLourenço, Ana F.-
dc.contributor.authorFerreira, Paulo J.-
dc.date.accessioned2011-07-28T14:11:56Z-
dc.date.available2011-07-28T14:11:56Z-
dc.date.issued2011-04-09-
dc.identifier.issn0928-0707-
dc.identifier.urihttp://hdl.handle.net/10316/15599-
dc.description.abstractThis study focus on the modification of the particles of precipitated calcium carbonate (PCC) with silica formed in situ by sol–gel method. The new materials were characterized by several spectroscopic, analytical and microscopic techniques. A dense film of highly branched silica was formed at the surface of the scalenohedral PCC crystals. The amount of silica deposited at the PCC surface, as determined by thermogravimetric analysis, reached up to 25 wt% under appropriate experimental conditions. Particle size distributions obtained by laser diffraction spectroscopy of the new modified PCC’s were close to the distribution of the original PCC, even considering that some variation in the average size of the particles was noted. This result is of great interest regarding the application of these materials, for instance, as fillers in the paper industry since the coating of silica may contribute to the fibre-to-fibre bonding, thus improving paper strength.por
dc.language.isoengpor
dc.publisherSpringerpor
dc.rightsclosedAccesspor
dc.subjectCalcium carbonatepor
dc.subjectNano compositespor
dc.subjectPaper fillerpor
dc.subjectSilicapor
dc.subjectSol–gelpor
dc.titleNew modified filler obtained by silica formed by sol–gel method on calcium carbonatepor
dc.typearticlepor
degois.publication.firstPage25por
degois.publication.lastPage31por
degois.publication.issue1por
degois.publication.titleJournal of Sol-Gel Science and Technologypor
dc.date.embargoEndDate10000-01-01-
dc.relation.publisherversion10.1007/s10971-011-2456-1por
dc.peerreviewedYespor
dc.identifier.doi10.1007/s10971-011-2456-1-
degois.publication.volume59por
item.fulltextCom Texto completo-
item.languageiso639-1en-
item.grantfulltextreserved-
crisitem.author.deptFaculty of Sciences and Technology-
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.orcid0000-0002-2860-9833-
crisitem.author.orcid0000-0002-4503-6811-
Appears in Collections:FCTUC Eng.Química - Artigos em Revistas Internacionais
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