Estudo dos filmes de poliacrilonitrila modificados pela adição de clorofilas, citocromo-c, Fe(II) e Fe(III)
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Data
2009-03-25
Autores
Santos, Vadilson Malaquias dos
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Universidade Federal do Espírito Santo
Resumo
In this work was studiedthe synthesis, characterization and some properties of the films of polyacrylonitrile (PAN), when adsorbed organic charge of metalporphyrinsnatural, organic molecules in the specific case of well known chemical properties, the chlorophyll (Chl) and cytochrome c (Cyt-c) and inorganiccharges: salts of Fe (II), Fe (III) and K +. In experiments to obtain data, wereused the techniques of infrared spectroscopy (FTIR) in the ultraviolet-visible (UV-VIS), fluorescence (EF), Mössbauer (MS), X-ray diffraction (XRD), microscopy scanning electron (SEM), thermal analysis (TG and DSC), elemental analysis, viscometer, cyclic voltammetry, and measures of resistivity. The synthesis of PAN in four replicates showed a yield above 77%.The molecular weight of PAN was obtained through the viscometer and the degree of crystallinity was obtained by XRD, are comparable to the literature. In the adsorption of cytochrome c, chlorophyll, and salts of Fe (II), Fe (III) and K+were products with characteristics that were analyzed by FTIR, TG, DSC, UV-VIS and EF, which has significant changes in physical and chemical properties of these materials. Besides the analysis of conventional Mössbauer analysis were carried out and measures the conductivity of materials. The adsorption isotherms and kinetics were performed for the salts of Fe (III) and cytochrome c show results of the adsorption of these substances in the PAN
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Poliacrilonitrila , Clorofila , Grupo dos Citocromos c
Citação
SANTOS, Vadilson Malaquias dos. Estudo dos filmes de poliacrilonitrila modificados pela adição de clorofilas, citocromo-c, Fe(II) e Fe(III). 2009. Dissertação (Mestrado em Química) – Universidade Federal do Espírito Santo, Vitória, 2009.