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Improved Chemical Reactivity of Lignocellulose from High Solids Content Micro-fibrillation by Twin-screw Extrusion

Journal of polymers and the environment, 2019-03, Vol.27 (3), p.643-651 [Peer Reviewed Journal]

Springer Science+Business Media, LLC, part of Springer Nature 2019 ;Journal of Polymers and the Environment is a copyright of Springer, (2019). All Rights Reserved. ;ISSN: 1566-2543 ;EISSN: 1572-8919 ;DOI: 10.1007/s10924-019-01377-3

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Title:
Improved Chemical Reactivity of Lignocellulose from High Solids Content Micro-fibrillation by Twin-screw Extrusion
Author: Li, Jinlei ; Thompson, Michael ; Lawton, David J. W.
Subjects: Acetylation ; Bioplastics ; Chemical modification ; Chemical reactions ; Chemistry ; Chemistry and Materials Science ; Environmental Chemistry ; Environmental Engineering/Biotechnology ; Extrusion ; Fibrillation ; Industrial Chemistry/Chemical Engineering ; Lignocellulose ; Materials Science ; Organic chemistry ; Original Paper ; Polymer Sciences ; Pretreatment ; Productivity ; Pulp ; Retention capacity ; Solids ; Wood ; Wood pulp
Is Part Of: Journal of polymers and the environment, 2019-03, Vol.27 (3), p.643-651
Description: The low reactivity of lignocellulose limits the effective chemical conversion of lignocellulose biomass into functional bioproducts. Mechanical micro-fibrillation treatment can improve the chemical accessibility of lignocellulose but usually has limited productivity by the low processing solids content. The presented work demonstrates effective micro-fibrillation of lignocellulose at high solids content up to 60 wt% can be achieved by twin-screw extrusion. Morphological characterizations of the extruded wood pulp lignocellulose show the degree of micro-fibrillation is enhanced by operating at higher solids content. The lignocellulose treated at 60 wt% solids content presents 2.1 and 4.8 times higher water retention capacity and specific surface area, respectively, than the original material. Acetylation results show the twin-screw extrusion pre-treatment can significantly accelerate the chemical modification of lignocellulose by 50%. This high productivity method for micro-fibrillating lignocellulose should be of great interest to the bioplastics industry.
Publisher: New York: Springer US
Language: English
Identifier: ISSN: 1566-2543
EISSN: 1572-8919
DOI: 10.1007/s10924-019-01377-3
Source: AUTh Library subscriptions: ProQuest Central

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Improved Chemical Reactivity of Lignocellulose from High Solids Content Micro-fibrillation by Twin-screw Extrusion

Springer Science+Business Media, LLC, part of Springer Nature 2019 ;Journal of Polymers and the Environment is a copyright of Springer, (2019). All Rights Reserved. ;ISSN: 1566-2543 ;EISSN: 1572-8919 ;DOI: 10.1007/s10924-019-01377-3

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