Publicação
Síntese e Caracterização da Sílica Mesoporosa SBA-16 para Aplicação na Liberação de Troxerrutina
| Resumo: | Mesoporous silica functionalized type SBA-16 with amino groups (NH2) have been prepared to act as devices for controlled drug release. The functionalization with organic groups is carried out by two different methods, post-synthesis and co-condensation. In this work, the matrix was prepared by co-condensation and (3-aminopropyl) trimethoxysilane (APTMS) was the organoalkoxysilane used in the process of funcionalization. The synthesized materials were characterized by small angle X-ray scattering (SAXS), Solid State Nuclear Magnetic Resonance of 13C and 29Si (NMR 13C and 29Si), thermal analysis (TGA/DTG), Infrared Spectroscopy (FT-IR), Adsorption-Desorption of Nitrogen (BET) and Elemental Analysis. The SBA-16 materials had specific surface area of 575 m2 / g, total pore volume of 0.45 cm3 at relative pressures of 0. 959 (p/po). FT-IR, NMR 13C, and TG/DTG confirmed the incorporation of NH2 group into the material. The analyzes showed that all samples synthesized present cubic structure, characteristic of mesoporous materials type SBA-16, with good ordering of the pore, high surface area and narrow pore size distribution (BET). The controlled-release study showed that the surface modification has improved the release rate of the drug troxerutin compared to the material not functionalized. |
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| Autores principais: | Semião, Luana de Morais |
| Assunto: | SBA-16 Troxerrutina Liberação controlada Material mesoporoso |
| Ano: | 2019 |
| País: | Brasil |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | IBICT |
| Idioma: | português |
| Origem: | Oasisbr |
| Resumo: | Mesoporous silica functionalized type SBA-16 with amino groups (NH2) have been prepared to act as devices for controlled drug release. The functionalization with organic groups is carried out by two different methods, post-synthesis and co-condensation. In this work, the matrix was prepared by co-condensation and (3-aminopropyl) trimethoxysilane (APTMS) was the organoalkoxysilane used in the process of funcionalization. The synthesized materials were characterized by small angle X-ray scattering (SAXS), Solid State Nuclear Magnetic Resonance of 13C and 29Si (NMR 13C and 29Si), thermal analysis (TGA/DTG), Infrared Spectroscopy (FT-IR), Adsorption-Desorption of Nitrogen (BET) and Elemental Analysis. The SBA-16 materials had specific surface area of 575 m2 / g, total pore volume of 0.45 cm3 at relative pressures of 0. 959 (p/po). FT-IR, NMR 13C, and TG/DTG confirmed the incorporation of NH2 group into the material. The analyzes showed that all samples synthesized present cubic structure, characteristic of mesoporous materials type SBA-16, with good ordering of the pore, high surface area and narrow pore size distribution (BET). The controlled-release study showed that the surface modification has improved the release rate of the drug troxerutin compared to the material not functionalized. |
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