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Article Dans Une Revue Cellulose Année : 2019

Production of fire-retardant phosphorylated cellulose fibrils by twin-screw extrusion with low energy consumption

Résumé

Phosphorylated cellulose nanofibrils (CNFs) were produced using a twin-screw extruder (TSE). The energy efficiency was compared with that of an ultra-fine grinder (UFG). CNFs at different solid contents were produced (10 wt% for the TSE and 2 wt% for the UFG), and their quality was compared using several characterization tests, such as optical microscopy, atomic force microscopy or MorFi fiber analyser. CNF nanopapers with high a Young’s modulus (14 GPa) and high transparency were successfully manufactured using CNFs produced by the TSE. The efficiency of the TSE was improved by using phosphorylated pulp instead of mechano-enzymatically treated pulp. The results show that phosphorylated CNFs can be easily produced at the industrial scale via twin-screw extrusion and present new functionalities such as fire-retardant properties, which are useful in many applications.
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Dates et versions

hal-04105530 , version 1 (24-05-2023)

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Fleur Rol, Naceur Belgacem, Valérie Meyer, Michel Petit-Conil, Julien Bras. Production of fire-retardant phosphorylated cellulose fibrils by twin-screw extrusion with low energy consumption. Cellulose, 2019, 26 (9), pp.5635-5651. ⟨10.1007/s10570-019-02447-4⟩. ⟨hal-04105530⟩

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