Green Nondegrading Approach to Alkyne-Functionalized Cellulose Fibers and Biohybrids Thereof: Synthesis and Mapping of the Derivatization
| Autor: | Marianne Gaborieau, Etienne Fleury, Elisa Zeno, Julien Bernard, Aurélia Charlot, Michel Petit-Conil, Gino Mangiante, Béatrice Burdin, Pierre Alcouffe |
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| Přispěvatelé: | Ingénierie des Matériaux Polymères (IMP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Centre Technologique des Microstructures (CTµ), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Key Centre of Polymer Colloids, The University of Sydney, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2012 |
| Předmět: |
Polymers and Plastics
Alkyne Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Biomaterials chemistry.chemical_compound symbols.namesake X-Ray Diffraction Polymer chemistry Materials Chemistry Cellulose Derivatization chemistry.chemical_classification Aqueous solution Aqueous medium Green Chemistry Technology [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Cellulose fiber [CHIM.POLY]Chemical Sciences/Polymers chemistry Alkynes symbols Crystallization 0210 nano-technology Raman spectroscopy Macromolecule |
| Zdroj: | Biomacromolecules Biomacromolecules, American Chemical Society, 2013, 14, pp.254-263. ⟨10.1021/bm3016829⟩ |
| ISSN: | 1526-4602 1525-7797 |
| DOI: | 10.1021/bm3016829 |
| Popis: | International audience; Alkyne-functionalized cellulose fibers have been generated through etherification under basic water or hydroalcoholic conditions (NaOH/H2O/isopropanol). For a given NaOH content, the medium of reaction and, more particularly, the water/IPA ratio, were shown to be of crucial importance to derivatize the fibers without altering their integrity and their crystalline nature. It was shown that the degree of substitution (DS) of the fibers increases concomitantly with isopropanol weight ratio and that, contrary to water or water-rich conditions, derivatization of fibers under isopropanol-rich conditions induces an alteration of the fibers. Optimization of etherification conditions in aqueous media afforded functionalized cellulose materials with DS up to 0.20. Raman confocal microscopy on derivatized fibers cross sections stressed that alkyne moieties are incorporated all over the fibers. The resulting fibers were postfunctionalized by molecular probes and macromolecules in aqueous or water-rich conditions. The effectiveness of the grafting was strongly impacted by the nature of the coupling agents. |
| Databáze: | OpenAIRE |
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