Sisal, Sugarcane Bagasse and Microcrystalline Celluloses: Influence of the Composition of the Solvent System N,NDimethylacetamide /Lithium Chloride on the Solubility and Acetylation of these Polysaccharides
| العنوان: | Sisal, Sugarcane Bagasse and Microcrystalline Celluloses: Influence of the Composition of the Solvent System N,NDimethylacetamide /Lithium Chloride on the Solubility and Acetylation of these Polysaccharides |
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| المؤلفون: | Gabriela T. Ciacco, Beatriz Aparecida Pereira Ass, Elisabete Frollini, Ludmila A. Ramos |
| المصدر: | e-Polymers. 8 |
| بيانات النشر: | Walter de Gruyter GmbH, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Materials science, Polymers and Plastics, General Chemical Engineering, Dimethylacetamide, Microcrystalline cellulose, chemistry.chemical_compound, chemistry, Lithium chloride, Organic chemistry, Hemicellulose, Physical and Theoretical Chemistry, Cellulose, Solubility, Bagasse, computer, SISAL, computer.programming_language |
| الوصف: | The present work describes an investigation concerning the acetylation of celluloses extracted from short-life-cycle plant sources (i.e. sugarcane bagasse and sisal fiber) as well as microcrystalline cellulose. The acetylation was carried out under homogeneous conditions using the solvent system N,Ndimethylacetamide/ lithium chloride. The celluloses were characterized, and the characterizations included an evaluation of the amount of hemicellulose present in the materials obtained from lignocellulosics sources (sugarcane and sisal). The amount of LiCl was varied and its influence on the degree of acetate substitution was analyzed. It was found that the solvent system composition and the nature of the cellulose influenced both the state of chain dissolution and the product characteristics. The obtained results demonstrated the importance of developing specific studies on the dissolution process as well as on the derivatization of celluloses from various sources. |
| تدمد: | 1618-7229 2197-4586 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1b1cb0c814ae90ce74774c9cd2492a7c https://doi.org/10.1515/epoly.2008.8.1.226 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........1b1cb0c814ae90ce74774c9cd2492a7c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16187229 21974586 |
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