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Costa, M.P.M.; Ferreira, I.L.M.
Associacao Brasileira de Ceramica (ABCERAM), Sao Paulo, SP (Brazil); Associacao Brasileira de Metalurgia, Materiais e Mineracao (ABM), Sao Paulo, SP (Brazil); Associacao Brasileira de Polimeros (ABPol), Sao Carlos, SP (Brazil)2014
Associacao Brasileira de Ceramica (ABCERAM), Sao Paulo, SP (Brazil); Associacao Brasileira de Metalurgia, Materiais e Mineracao (ABM), Sao Paulo, SP (Brazil); Associacao Brasileira de Polimeros (ABPol), Sao Carlos, SP (Brazil)2014
AbstractAbstract
[en] In this study, biohydrogels were produced from the combination of two polysaccharides (chitosan and sodium alginate). The concentrations of polysaccharide (0.5 to 3% m / m) and clay (0.5 and 2.0%) were varied. CaCl2 was used as a crosslinking agent. The samples were characterized by thermogravimetry (thermal stability), FTIR (chemical composition), scanning electron microscopy (SEM), and X-ray diffraction. The present work aims to study the influence of different clay content in biohydrogel produced. In the presence of clay, a differentiated morphology was observed by SEM. The degree of swelling was evaluated as a function of the composition of each mixture. The presence of clay caused a significant swelling of the hydrogel on the water absorption when the clay content was increased. The FTIR spectra showed the presence of characteristic bands of each polysaccharide, and the clay. The XRD showed that the amorphous presented biohydrogel behavior. (author)
Original Title
Estudo da influencia da adicao de argila MMT na preparacao de biohidrogel a base de polimeros naturais
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Source
2014; 9 p; 21. CBECIMAT: Brazilian congress of engineering and materials science; 21. CBECIMAT: congresso brasileiro de engenharia e ciencia dos materiais; Cuiaba, MT (Brazil); 9-13 Nov 2014
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Miscellaneous
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Conference
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ALKALI METALS, AMINES, CARBOHYDRATES, CHEMICAL ANALYSIS, CHEMICAL REACTIONS, COHERENT SCATTERING, COLLOIDS, DEFORMATION, DIFFRACTION, DISPERSIONS, ELECTRON MICROSCOPY, ELEMENTS, GELS, GRAVIMETRIC ANALYSIS, INTEGRAL TRANSFORMATIONS, METALS, MICROSCOPY, MINERALS, MUCOPOLYSACCHARIDES, ORGANIC COMPOUNDS, POLYMERIZATION, POLYSACCHARIDES, QUANTITATIVE CHEMICAL ANALYSIS, SACCHARIDES, SCATTERING, SILICATE MINERALS, SPECTRA, THERMAL ANALYSIS, TRANSFORMATIONS
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