Mercerized linters cellulose: characterization and acetylation in N,N-dimethylacetamide/lithium chloride
| العنوان: | Mercerized linters cellulose: characterization and acetylation in N,N-dimethylacetamide/lithium chloride |
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| المؤلفون: | Elisabete Frollini, Mohamed Naceur Belgacem, Beatriz Aparecida Pereira Ass |
| المساهمون: | Laboratoire Génie des procédés papetiers (LGP2 ), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Leclerc, Sylvie, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Carbohydrate Polymers Carbohydrate Polymers, Elsevier, 2006, 63, pp.19-29 |
| بيانات النشر: | Elsevier BV, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | [CHIM.MATE] Chemical Sciences/Material chemistry, Polymers and Plastics, Organic Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Cellulose acetate, Dimethylacetamide, 0104 chemical sciences, chemistry.chemical_compound, Acetic anhydride, chemistry, Materials Chemistry, Inverse gas chromatography, Lithium chloride, Organic chemistry, Reactivity (chemistry), Cellulose, 0210 nano-technology, Derivatization, ComputingMilieux_MISCELLANEOUS, Nuclear chemistry |
| الوصف: | Linters cellulose was subjected to different treatments (mercerization and ionized air) before acetylation with acetic anhydride, in homogeneous medium, using DMAc/LiCl as solvent system. Before derivatization, the treated fibres were characterized by Scanning Electron Microscopy, X-ray diffraction, alpha-cellulose content, Inverse Gas Chromatography and viscosimetry. It was shown that except a decrease in the dispersive surface energy, the treatments induced small changes in the cellulose. The degree of acetylation of these fibers was found to follow a linear behavior with the stoichiometry between acetic anhydride and glucose unit, but this linearity obeyed high rate up to a DS of 2.0. The order of reactivity observed for all samples, C6>>C2>C3, confirms the higher reactivity of OH in C6 position, because this group is the least sterically hindered of the anhydroglucose unity. |
| تدمد: | 0144-8617 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0af8f78e98a5c89d6f11f348a863680c https://doi.org/10.1016/j.carbpol.2005.06.010 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....0af8f78e98a5c89d6f11f348a863680c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 01448617 |
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