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Sustainable Approach for Cellulose Aerogel Preparation from the DBU-CO 2 Switchable Solvent

dc.rights.licenseopenen_US
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
dc.contributor.authorONWUKAMIKE, Kelechukwu Nnabuike
hal.structure.identifierLaboratoire des Composites Thermostructuraux [LCTS]
dc.contributor.authorLAPUYADE, Laurine
hal.structure.identifierLaboratoire des Composites Thermostructuraux [LCTS]
dc.contributor.authorMAILLE, Laurence
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorGRELIER, Stephane
hal.structure.identifierLaboratoire de Chimie - UMR5182 [LC]
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorGRAU, Etienne
IDREF: 187909261
hal.structure.identifierLaboratoire de Caractérisation Physique Off-line [LCPO]
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorCRAMAIL, Henri
dc.contributor.authorMEIER, Michael A. R.
dc.date.accessioned2021-09-08T08:59:25Z
dc.date.available2021-09-08T08:59:25Z
dc.date.issued2019
dc.identifier.otherhttps://pubs.acs.org/doi/10.1021/acssuschemeng.8b05427#article_content-righten_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/112154
dc.description.abstractEnWe report a sustainable and easy approach for the preparation of cellulose-based aerogels from the DBU–CO2 switchable solvent system via a solubilization and coagulation approach followed by freeze-drying. The easy, fast, and mild solubilization step (15 min at 30 °C) allows for a rapid preparation procedure. The effect of various processing parameters, such as cellulose concentration, coagulating solvent, and the superbase, on important aerogel characteristics including density, porosity, pore size, and morphology, were investigated. Density values obtained ranged between 0.05 and 0.12 g/cm3, with porosity values between 92% and 97%. The morphology of the obtained cellulose aerogels was studied using scanning electron microscopy (SEM) showing a random and open large macroporous cellulose network with pore sizes ranging between 1.1 and 4.5 μm, depending on the processing conditions. In addition, specific surface areas determined by N2 adsorption applying the BET equation ranged between 19 and 26 m2/g. The effect of the coagulating solvent and superbase on the crystallinity was investigated using X-ray diffraction (XRD) showing an amorphous crystal structure with a broad 2θ diffraction peak at 20.6°. In addition, no chemical modification was observed in the prepared aerogels from infrared spectroscopy. Finally, the recovery and reuse of the solvent system was demonstrated, thus making the process more sustainable.
dc.language.isoENen_US
dc.subject.enCellulose aerogels
dc.subject.enCO2 switchable solvent
dc.subject.enSustainability
dc.title.enSustainable Approach for Cellulose Aerogel Preparation from the DBU-CO 2 Switchable Solvent
dc.typeArticle de revueen_US
dc.identifier.doi10.1021/acssuschemeng.8b05427en_US
dc.subject.halChimie/Matériauxen_US
dc.description.sponsorshipEuropeMarie Sklodowska-Curieen_US
bordeaux.journalACS Sustainable Chemistry and Engineeringen_US
bordeaux.page3329-3338en_US
bordeaux.volume7en_US
bordeaux.hal.laboratoriesLaboratoire des Composites Thermo Structuraux (LCTS) - UMR 5801en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.institutionCEAen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.identifierhal-02134711
hal.exportfalse
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ACS%20Sustainable%20Chemistry%20and%20Engineering&rft.date=2019&rft.volume=7&rft.issue=3&rft.spage=3329-3338&rft.epage=3329-3338&rft.au=ONWUKAMIKE,%20Kelechukwu%20Nnabuike&LAPUYADE,%20Laurine&MAILLE,%20Laurence&GRELIER,%20Stephane&GRAU,%20Etienne&rft.genre=article


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