Preparação e caracterização de compositos de celulose e oxido de antimonio
AUTOR(ES)
Eduardo Aparecido Toledo
DATA DE PUBLICAÇÃO
1998
RESUMO
This work describes a methodology for the preparation of composites among cellulosic matrix ( a.-cellulose and cellulose acetate) with antimony (III) and (V) oxides. This method is based upon the insertion of a precursor in the matrix which is hydrolysed to oxide form. This method was reproductible and the composites formed were stable. The presence ot these oxides in the matrix changed their physical and chemical properties. For a-celulose/Sb2O3 composite it was observed the formation of two different crystalline structures, cubic and orthorombic, depending on employed hydrolysis method. For a-celulose/Sb2O5 composites it was detected the unique presence of antimony (V) which permited the formation of FeSbO4 phase. This antimonate phase was characterized by XPS and Mössbauer spectroscopy.
ASSUNTO(S)
celulose analise termica microscopia eletronica de varredura
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000189129Documentos Relacionados
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