High-Lignin-Containing Cellulose Nanofibrils from Date Palm Waste Produced by Hydrothermal Treatment in the Presence of Maleic Acid - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Biomacromolecules Année : 2023

High-Lignin-Containing Cellulose Nanofibrils from Date Palm Waste Produced by Hydrothermal Treatment in the Presence of Maleic Acid

Amira Najahi
Quim Tarrés
Marc Delgado-Aguilar
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Sami Boufi

Résumé

Lignin-containing cellulose nanofibrils (LCNFs) have attracted great attention because the presence of lignin brought additional merits to cellulose nanofibrils including hydrophobicity, ultraviolet (UV)shielding capacity, and reduced water sensitivity. In the present work, LCNFs with lignin content up to 21 wt % were prepared with a high yield exceeding 70 wt %, from neat date palm waste, by a hydrothermal treatment (HTT) at 120−150 °C in the presence of 20−30 wt % maleic acid, followed by highpressure homogenization. The chemical composition, degree of polymerization, morphology, and colloidal and rheological properties of the LCNFs were investigated to understand how the HTT in the presence of MA affected the properties of the resulting LCNFs. Nanopapers prepared from the LCNF suspensions exhibited mechanical properties lower than those from lignin-free CNF-based nanopapers, yet with decreased hydrophilicity. A mechanism explaining how the HTT in the presence of MA facilitated the disintegration of the biomass into nanoscale material was proposed. Overall, the present work demonstrated a feasible and scalable approach for the sustainable production of LCNF suspensions from neat agricultural residues, with a high yield and a high lignin content, without any need to perform a preliminary partial delignification.

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Dates et versions

hal-04181380 , version 1 (15-08-2023)

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Amira Najahi, Quim Tarrés, Marc Delgado-Aguilar, Jean-Luc Putaux, Sami Boufi. High-Lignin-Containing Cellulose Nanofibrils from Date Palm Waste Produced by Hydrothermal Treatment in the Presence of Maleic Acid. Biomacromolecules, 2023, 24 (8), pp.3872 - 3886. ⟨10.1021/acs.biomac.3c00515⟩. ⟨hal-04181380⟩
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