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- Title
Production of low-density and high-strength paperboards by controlled micro-nano fibrillation of fibers.
- Authors
Ahadian, Hamidreza; Ceccherini, Sara; Sharifi Zamani, Elaheh; Phiri, Josphat; Maloney, Thaddeus
- 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.
- Subjects
OSMOTIC pressure; FIBERS; COST structure; CELLULOSE fibers; PACKAGING industry; PRODUCE trade; NANOFIBERS
- Publication
Journal of Materials Science, 2023, Vol 58, Issue 44, p17126
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-023-09097-9