Production of low-density and high-strength paperboards by controlled micro-nano fibrillation of fibers
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2023-11
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Language
en
Pages
17126–17137
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Journal of Materials Science, Volume 58, issue 44
Abstract
One of the critical challenges in the fiber-based packaging industry is to produce low-density paperboards with high functionality and attractive cost structure. In this study, we examine how control of the hierarchical fiber swelling can be used to enhance bonding and generate a low-density fiber network with excellent strength properties. Here, the osmotic pressure inside the cell wall is increased by adding phosphate groups with a deep eutectic solvent (DES) functional drying method. Together with mechanical refining, this process causes the fibril aggregates to split and swell up massively. This effect was measured by a novel thermoporosimetry analysis method. The treated fibers have enhanced external fibrillation, fibrillar fines and bonding potential. When mixed with relatively stiff, unrefined fibers, a well-bonded sheet with lower density than a conventionally refined reference sheet was achieved. The results suggest that pulp fibers can be “nanoengineered” to enhance performance without the complications of producing and adding nanocellulose.Description
Funding Information: This research was funded by Jane and Aatos Erkko Foundation (3269-7422e). This work made use of Aalto University Bioeconomy Facilities. The SEM imaging was conducted at Aalto University Nanomicroscopy Centre (Aalto-NMC). Publisher Copyright: © 2023, The Author(s).
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Ahadian, H, Ceccherini, S, Sharifi Zamani, E, Phiri, J & Maloney, T 2023, ' Production of low-density and high-strength paperboards by controlled micro-nano fibrillation of fibers ', Journal of Materials Science, vol. 58, no. 44, pp. 17126–17137 . https://doi.org/10.1007/s10853-023-09097-9
