Abstract
Cellulose films, predominantly consisting of micro-nanocelluloses, are a new type of product with interesting properties for functional packaging applications. However, the potentially scalable production methodology has not yet been elucidated. Poor dewatering and high web shrinkage are issues that need solutions beyond what is available in conventional paper production. This research investigates a cyclic pressing method that shows potential in cellulose film consolidation. Cyclic pressing allows the MNFC films to be dewatered to about 90% solids while yielding a smooth, flat product. The results show no inherent physical limits for mechanical dewatering these high swelling webs, even at very high solids. Cyclic pressing allows controlled restraint during consolidation, which could be adjusted in an industrial setup to produce even films with desirable product characteristics.
| Original language | English |
|---|---|
| Pages (from-to) | 5483-5496 |
| Number of pages | 14 |
| Journal | BioResources |
| Volume | 19 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2024 |
| MoE publication type | A1 Journal article-refereed |
Funding
This research was funded by Aalto University. This work made use of Aalto University Bioeconomy Facilities. This work was supported by Aalto University.
Keywords
- Capillary pressing
- Consolidation
- Dewatering
- Film
- Microfibrillated cellulose
- Nanopaper
- Shrinkage
- Wet pressing