title: Preparation and characterization of cellulose/hydrous niobium oxide hybrid.
abstract: A composite of cellulose extracted from bagasse with Nb2O5·nH2O in three different proportions (16.67, 37.5 and 50.0 wt%) was prepared using the co-precipitation method. The materials were characterized by X-ray diffractometry (XRD), Fourier transform infra-red spectroscopy (FTIR), thermogravimetric analysis (TG/DTG), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). TG data obtained show that the presence of inorganic material influenced slightly the stability of the hybrid material. The precipitation of 16.67 wt.% of oxide was sufficient to inhibit the combustion peaks present in the DSC curve of cellulose. This work will help find new applications for these materials.
authors.affiliation: Chemistry Department - DEQUI/EEL/USP. Rod. Itajubá-Lorena, Km 74,5 - Lorena - Cep: 12600 000 - SP - Brazil.
authors.forename: Leandro José
authors.initials: LJ
authors.lastname: Maschio
authors.affiliation: Fatigue and Aeronautical Materials Research Group - DMT/FEG/UNESP. Av. Ariberto Pereira da Cunha, 333 - Guaratinguetá - Cep: 12516 410 - SP - Brazil.
authors.forename: Paulo Henrique Fernandes
authors.initials: PH
authors.lastname: Pereira
authors.affiliation: Chemistry Department - DEQUI/EEL/USP. Rod. Itajubá-Lorena, Km 74,5 - Lorena - Cep: 12600 000 - SP - Brazil.
authors.forename: Maria Lucia Caetano Pinto
authors.initials: ML
authors.lastname: Da Silva
mesh_terms: D002152:Calorimetry, Differential Scanning; D002482:Cellulose / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D010087:Oxides; D009556:Niobium; D002482:Cellulose; C073337:niobium pentoxide