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The Effect of Cellulose Nanofibres on Dewatering during Wet-Forming and the Mechanical Properties of Thermoformed Specimens Made of Thermomechanical and Kraft Pulps

Nanomaterials (Basel, Switzerland), 2023-09, Vol.13 (18), p.2511 [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2023 by the authors. 2023 ;ISSN: 2079-4991 ;EISSN: 2079-4991 ;DOI: 10.3390/nano13182511 ;PMID: 37764540

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Title:
The Effect of Cellulose Nanofibres on Dewatering during Wet-Forming and the Mechanical Properties of Thermoformed Specimens Made of Thermomechanical and Kraft Pulps
Author: Jacobsen, Eirik Ulsaker ; Følkner, Simen Prang ; Blindheim, Jørgen ; Molteberg, Dag ; Steinert, Martin ; Chinga-Carrasco, Gary
Subjects: Biodegradation ; Bioplastics ; Cellulose ; Cellulose fibers ; Dewatering ; Drainage ; Elongation ; Energy consumption ; Fibers ; Food packaging ; Identification and classification ; Kraft pulp ; Mechanical properties ; nanocellulose ; Nanofibers ; Nanoparticles ; Packaging ; Pressure molding ; Pulp ; Renewable resources ; sustainable ; Sustainable yield ; Thermal properties ; Thermoforming ; wet-forming ; Wood ; Wood pulp
Is Part Of: Nanomaterials (Basel, Switzerland), 2023-09, Vol.13 (18), p.2511
Description: Due to environmental concerns regarding single-use plastic materials, major efforts are being made to develop new material concepts based on biodegradable and renewable resources, e.g., wood pulp. In this study, we assessed two types of wood pulp fibres, i.e., thermomechanical pulp (TMP) and Kraft pulp fibres, and tested the performance of the fibres in wet-moulding and thermopressing trials. Kraft pulp fibres appeared to retain more water than TMP, increasing the dewatering time during wet-moulding and apparently increasing the compression resistance of the pulp during thermoforming. Additionally, cellulose nanofibres (CNF) were added to the pulps, which improved the mechanical properties of the final thermopressed specimens. However, the addition of CNF to the pulps (from 2 to 6%) had a further decrease in the dewatering efficiency in the wet-moulding process, and this effect was more pronounced in the Kraft pulp specimens. The mechanical performance of the thermoformed specimens was in the same range as the plastic materials that are conventionally used in food packaging, i.e., modulus 0.6–1.2 GPa, strength 49 MPa and elongation 6–9%. Finally, this study demonstrates the potential of wood pulps to form three-dimensional thermoformed products.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 2079-4991
EISSN: 2079-4991
DOI: 10.3390/nano13182511
PMID: 37764540
Source: PubMed Central
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The Effect of Cellulose Nanofibres on Dewatering during Wet-Forming and the Mechanical Properties of Thermoformed Specimens Made of Thermomechanical and Kraft Pulps

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