PREPARATION and CHARACTERIZATION of CELLULOSE/HYDROUS NIOBIUM PHOSPHATE HYBRID

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dc.contributor.authorFernandes Pereira, Paulo H. [UNESP]
dc.contributor.authorVoorwald, Herman Jacobus Cornelis [UNESP]
dc.contributor.authorCioffi, Maria Odila H. [UNESP]
dc.contributor.authorCaetano Pinto da Silva, Maria Lucia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T13:28:16Z
dc.date.available2014-05-20T13:28:16Z
dc.date.issued2010-01-01
dc.description.abstractIn recent years, increasing attention has been directed to the use of renewable resources, particularly of sugarcane bagasse. Considering the abundant availability of such lignocellulosic materials, relatively few attempts have been made regarding their utilization. Studies about properties and morphology, heavy metal adsorption, and membranes preparation have been conduced by this research group in order to use these materials. In this paper, cellulose fibers obtained from sugarcane bagasse were bleached and modified by hydrous niobium phosphate. Hybrids (cellulose/NbOPO(4)center dot nH(2)O) were prepared from metallic niobium dissolved in a fluoridric/nitric (10:1) mixture, to which cellulose sugarcane bagasse was added. Afterwards a concentrated orthophosphoric acid (85mL, 85% w/w) was added to precipitate hydrous niobium phosphate particles. This material was characterized by X-ray diffraction (XRD), thermogravimetry (TG/DTG), and differential scanning calorimetry (DSC) analyses, as well as scanning electronic microscopy (SEM) coupled to an energy dispersive spectrophotometer (EDS). Morphological studies of bleached cellulose revealed different sizes and arrangement of cells, showing that NbOPO(4)center dot nH(2)O was present in the cellulose structure. Thermal stability of the hybrid was observed up to approximately 200 degrees C, and the cellulose decomposed at 300 degrees C. These data will help finding new uses for these materials.en
dc.description.affiliationUNESP FEG, Dept Mat & Technol, Guaratingueta, SP, Brazil
dc.description.affiliationUSP EEL, Dept Chem Engn, Lorena, SP, Brazil
dc.description.affiliationUnespUNESP FEG, Dept Mat & Technol, Guaratingueta, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 06/06740-2
dc.format.extent1010-1021
dc.identifierhttp://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_05_2_1010_Pereira_VCD_Prep_Char_Nb_Phosphate_Hybrids
dc.identifier.citationBioresources. Raleigh: North Carolina State Univ Dept Wood & Paper Sci, v. 5, n. 2, p. 1010-1021, 2010.
dc.identifier.issn1930-2126
dc.identifier.lattes3511534795805776
dc.identifier.urihttp://hdl.handle.net/11449/9400
dc.identifier.wosWOS:000276597000040
dc.language.isoeng
dc.publisherNorth Carolina State Univ Dept Wood & Paper Sci
dc.relation.ispartofBioResources
dc.relation.ispartofjcr1.202
dc.relation.ispartofsjr0,405
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectCelluloseen
dc.subjectHydrous niobium phosphateen
dc.subjectSugarcane bagasseen
dc.titlePREPARATION and CHARACTERIZATION of CELLULOSE/HYDROUS NIOBIUM PHOSPHATE HYBRIDen
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://ojs.cnr.ncsu.edu/index.php/BioRes/about/submissions#copyrightNotice
dcterms.rightsHolderNorth Carolina State Univ Dept Wood & Paper Sci
unesp.author.lattes3511534795805776
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Guaratinguetápt

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