Skip to Main content Skip to Navigation
Journal articles

Effects of Deep Eutectic Solvents on cellulosic fibres and paper properties: Green “chemical” refining

Abstract : This work aims to study the effects of Deep Eutectic Solvents (DES) on cellulosic fibre structure. A focus was made on the induced fibrillation phenomena which could facilitate the further production of microfibrillated cellulose. Three DES of different pH (acid, neutral and alkaline), namely betaine hydrochloride-urea, choline chloride-urea and choline chloride-monoethanolamine, were tested. Eucalyptus and cotton pulps were used to investigate the effects of DES on both hemicelluloses and cellulose. Interestingly, cellulose was esterified during acidic DES treatment. Moreover, an internal and external fibrillation occurred with DES treatment without a great extent of modification in terms of chemical composition, crystallinity and degree of polymerisation. Compared to enzymatic hydrolysis (used as a conventional pre-treatment for cellulose microfibrillation), DES have significantly enhanced the mechanical properties of resulting papers. To conclude, DES treatment can be considered as a soft and green “chemical” refining that could be applied as a pre-treatment for cellulose microfibrillation.
Document type :
Journal articles
Complete list of metadata

https://hal-cnrs.archives-ouvertes.fr/hal-03755448
Contributor : Sami Halila Connect in order to contact the contributor
Submitted on : Tuesday, August 23, 2022 - 6:19:09 PM
Last modification on : Wednesday, August 24, 2022 - 3:19:31 AM

Files

Carbohydr_Polym_Mnasri_2022.pd...
Files produced by the author(s)

Identifiers

Collections

Citation

Ahlem Mnasri, Hatem Dhaouadi, Ramzi Khiari, Sami Halila, Evelyne Mauret. Effects of Deep Eutectic Solvents on cellulosic fibres and paper properties: Green “chemical” refining. Carbohydrate Polymers, Elsevier, 2022, 292, pp.119606. ⟨10.1016/j.carbpol.2022.119606⟩. ⟨hal-03755448⟩

Share

Metrics

Record views

33

Files downloads

11