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

dc.rights.licenseopen
dc.contributor.authorONWUKAMIKE, Kelechukwu
dc.contributor.authorLAPUYADE, Laurine
hal.structure.identifierLaboratoire des Composites Thermostructuraux [LCTS]
dc.contributor.authorMAILLÉ, Laurence
hal.structure.identifierLaboratoire de Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorGRELIER, Stéphane
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 Chimie des Polymères Organiques [LCPO]
hal.structure.identifierTeam 2 LCPO : Biopolymers & Bio-sourced Polymers
dc.contributor.authorCRAMAIL, Henri
hal.structure.identifierUniversität Karlsruhe [TH]
dc.contributor.authorMEIER, Michael A.R.
dc.date.accessioned2020
dc.date.available2020
dc.date.issued2019
dc.identifier.issn2168-0485
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/19807
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.isoen
dc.publisherAmerican Chemical Society
dc.subject.enCO2
dc.subject.enAerogel
dc.subject.enCellulose
dc.title.enSustainable Approach for Cellulose Aerogel Preparation from the DBU–CO 2 Switchable Solvent
dc.typeArticle de revue
dc.identifier.doi10.1021/acssuschemeng.8b05427
dc.subject.halChimie/Polymères
dc.subject.halChimie/Matériaux
dc.subject.halChimie
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
bordeaux.journalACS Sustainable Chemistry & Engineering
bordeaux.page3329-3338
bordeaux.volume7
bordeaux.hal.laboratoriesLaboratoire de Chimie des Polymères Organiques (LCPO) - UMR 5629*
bordeaux.issue3
bordeaux.institutionBordeaux INP
bordeaux.institutionUniversité de Bordeaux
bordeaux.peerReviewedoui
hal.identifierhal-02134711
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02134711v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ACS%20Sustainable%20Chemistry%20&%20Engineering&rft.date=2019&rft.volume=7&rft.issue=3&rft.spage=3329-3338&rft.epage=3329-3338&rft.eissn=2168-0485&rft.issn=2168-0485&rft.au=ONWUKAMIKE,%20Kelechukwu&LAPUYADE,%20Laurine&MAILL%C3%89,%20Laurence&GRELIER,%20St%C3%A9phane&GRAU,%20Etienne&rft.genre=article


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