Levan in the developing of new colon-specific polymer material: evaluation of the permeability, moisture and thermal analyses in free films of Eudragit® FS 30 D/Levana no desenvolvimento de novo material polimerico colon-especifico: avaliacao da permeabilidade, intumescimento e analises termicas de filmes isolados de Eudragit® FS 30 D
Levan was used as agent in the synthesis of new colon-specific polymeric matrix together with Eudragit® FS 30 D. Eudragit® FS 30 D films incorporated with levan were made by casting process and characterized to: water vapour transmission, sweeling index, differential scanning calorimetry and thermog...
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Veröffentlicht in: | Acta scientiarum. Health sciences 2012-07, Vol.34 (2), p.185-191 |
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Sprache: | eng ; spa |
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Zusammenfassung: | Levan was used as agent in the synthesis of new colon-specific polymeric matrix together with Eudragit® FS 30 D. Eudragit® FS 30 D films incorporated with levan were made by casting process and characterized to: water vapour transmission, sweeling index, differential scanning calorimetry and thermogravimetric. The levan increased the films permeability (p < 0.001) however did not influenced in the sweeling index of the formulations (p > 0.05). The thermal analyses of the films indicated a glass transition temperature approximate at 47°C and thermal decomposition at 400°C. The results indicated that there is potential for using such site-specificity blend as pharmaceutical coating material. Keywords: coating material, colon-specific release, physicochemical characterization, thermal analysis. Levana foi utilizada na sintese de novo material polimerico colon-especifico conjuntamente com o Eudragit® FS 30 D. Filmes de Eudragit® FS 30 D aditivados de levana foram feitos pelo metodo de "casting process" e caracterizados quanto a transmissao de vapor de agua, indice de intumescimento, calorimetria diferencial de varredura e termogravimetria. A levana aumentou a permeabilidade dos filmes (p < 0,001), entretanto nao influenciou no indice de intumescimento das formulacoes (p > 0,05). As analises termicas dos filmes indicaram uma temperatura de transicao vitrea aproximada de 47°C e temperatura de decomposicao de 400°C. Os resultados indicaram que ha potencial de uso desta nova blenda sitio-especifica como material de revestimento farmaceutico. Palavras-chave: material de revestimento, liberacao colon-especifica, caracterizacao fisico-quimica, analises termicas. |
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ISSN: | 1679-9291 1807-8648 |
DOI: | 10.4025/actascihealthsci.v34i2.11729 |