Cellulose dissolution and gelation in NaOH(aq) under controlled CO2 atmosphere: supramolecular structure and flow properties

Guillermo Reyes; Alistair W.T. King; Tetyana V. Koso; Paavo A. Penttilä; Harri Kosonen; Orlando J. Rojas

doi:10.1039/d2gc02916b

Cellulose dissolution and gelation in NaOH(aq) under controlled CO₂ atmosphere: supramolecular structure and flow properties

Guillermo Reyes^*, Alistair W.T. King, Tetyana V. Koso, Paavo A. Penttilä, Harri Kosonen, Orlando J. Rojas

^*Corresponding author for this work

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Abstract

We investigate the interplay between cellulose crystallization and aggregation with interfibrillar interactions, shear forces, and the local changes in the medium's acidity. The latter is affected by the CO₂ chemisorbed from the surrounding atmosphere, which, combined with shear forces, explain cellulose gelation. Herein, rheology, nuclear magnetic resonance (NMR), small and wide-angle X-ray scattering (SAXS/WAXS), and focused ion beam scanning electron microscopy (FIB-SEM) are combined to unveil the fundamental factors that limit cellulose gelation and maximize its dissolution in NaOH(aq). The obtained solutions are then proposed for developing green and environmentally friendly cellulose-based materials.

Original language	English
Pages (from-to)	8029-8035
Number of pages	7
Journal	Green Chemistry
Volume	24
Issue number	20
Early online date	16 Sep 2022
DOIs	https://doi.org/10.1039/d2gc02916b
Publication status	Published - 21 Oct 2022
MoE publication type	A1 Journal article-refereed

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CHEM_Reyes_et_al_Cellulose_dissolution_and_gelation_2022_Green_ChemistryFinal published version, 1.36 MBLicence: CC BY

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title = "Cellulose dissolution and gelation in NaOH(aq) under controlled CO2 atmosphere: supramolecular structure and flow properties",

abstract = "We investigate the interplay between cellulose crystallization and aggregation with interfibrillar interactions, shear forces, and the local changes in the medium's acidity. The latter is affected by the CO2 chemisorbed from the surrounding atmosphere, which, combined with shear forces, explain cellulose gelation. Herein, rheology, nuclear magnetic resonance (NMR), small and wide-angle X-ray scattering (SAXS/WAXS), and focused ion beam scanning electron microscopy (FIB-SEM) are combined to unveil the fundamental factors that limit cellulose gelation and maximize its dissolution in NaOH(aq). The obtained solutions are then proposed for developing green and environmentally friendly cellulose-based materials.",

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note = "| openaire: EC/H2020/788489/EU//BioELCell Funding Information: This work was supported by the FinnCERES Flagship Program. G. R. acknowledges the contribution of UPM and support of the Academy of Finland's Flagship Program under Projects No. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). G. Reyes, and O. J. Rojas are grateful for the support received from the ERC Advanced Grant Agreement No. 788489 (“BioElCell”) and The Canada Excellence Research Chair Program (CERC-2018-00006), as well as Canada Foundation for Innovation (Project Number 38623). P. A. P. thanks the Academy of Finland for funding (Grant No. 338804). A. W. T. K. and T. K. thank the Academy of Finland for funding (Grant No. 311255). The provision of facilities and technical support by Aalto University at OtaNano-Nanomicroscopy Center (Aalto-NMC) is also gratefully acknowledged. Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry.",

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AU - Penttilä, Paavo A.

AU - Kosonen, Harri

AU - Rojas, Orlando J.

N1 - | openaire: EC/H2020/788489/EU//BioELCell Funding Information: This work was supported by the FinnCERES Flagship Program. G. R. acknowledges the contribution of UPM and support of the Academy of Finland's Flagship Program under Projects No. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). G. Reyes, and O. J. Rojas are grateful for the support received from the ERC Advanced Grant Agreement No. 788489 (“BioElCell”) and The Canada Excellence Research Chair Program (CERC-2018-00006), as well as Canada Foundation for Innovation (Project Number 38623). P. A. P. thanks the Academy of Finland for funding (Grant No. 338804). A. W. T. K. and T. K. thank the Academy of Finland for funding (Grant No. 311255). The provision of facilities and technical support by Aalto University at OtaNano-Nanomicroscopy Center (Aalto-NMC) is also gratefully acknowledged. Publisher Copyright: © 2022 The Royal Society of Chemistry.

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Cellulose dissolution and gelation in NaOH(aq) under controlled CO₂ atmosphere: supramolecular structure and flow properties

Abstract

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NNxWOOD: Neural networks for X-ray scattering analysis of wood materials

BioELCell: Bioproducts Engineered from Lignocelluloses: from plants and upcycling to next generation materials

CERES: Competence Center for the materials Bioeconomy: A Flagship for our Sustainable Future

OtaNano

OtaNano - Nanomicroscopy Center

Cite this

Cellulose dissolution and gelation in NaOH(aq) under controlled CO2 atmosphere: supramolecular structure and flow properties

Abstract

UN SDGs

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Projects

NNxWOOD: Neural networks for X-ray scattering analysis of wood materials

BioELCell: Bioproducts Engineered from Lignocelluloses: from plants and upcycling to next generation materials

CERES: Competence Center for the materials Bioeconomy: A Flagship for our Sustainable Future

Equipment

OtaNano

OtaNano - Nanomicroscopy Center

Cite this

Cellulose dissolution and gelation in NaOH(aq) under controlled CO₂ atmosphere: supramolecular structure and flow properties