Abstract
Fine fibres (fines) occur at various stages of the papermaking process. The high specific surface of fines may be of special interest in applications beyond papermaking. In the present study, foamy water suspensions of fines were freeze-dried, and in this way their porous structure was maintained. The density and porosity of these foams could be governed by varying the water content of the suspensions. The obtained matrices were highly hydrophobic because of the sizing applied during the papermaking process. Consequently, a high oil sorption capacity of the fines was observed. Up to a porosity of 98%, more than 80% of the overall volume of the foam-like material could be soaked with liquid. At higher porosities, the absorbed volume decreased. Mechanical reinforcement of the foams with poly(methyl methacrylate) (PMMA) as accomplished by dip-coating had no negative impact on the sorption behaviour. However, the performance of reinforced samples suffered from strong shrinkage upon drying, especially for high porosity matrices.
Funding source: Österreichische Forschungsförderungsgesellschaft
Award Identifier / Grant number: 836650
Funding statement: Funding by the Austrian Research Promotion Agency FFG, project No. 836650, Funder Id: 10.13039/501100004955, FLIPPR (Future Lignin and Pulp Processing Research) is gratefully acknowledged.
Acknowledgements
One of the authors (J.C.) thanks Stefan Veigel for proof-reading and commenting on the manuscript. Philipp Siedlaczek is thanked for the SEM pictures.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Employment or leadership: None declared.
Honorarium: None declared.
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Articles in the same Issue
- Frontmatter
- Editorial
- Advances in biorefinery research
- Original Articles
- Techno-economic feasibility of bioethanol production via biorefinery of olive tree prunings (OTP): optimization of the pretreatment stage
- Designing an olive tree pruning biorefinery for the production of bioethanol, xylitol and antioxidants: a techno-economic assessment
- Structural characteristics of lignin in pruning residues of olive tree (Olea europaea L.)
- Production of xylooligosaccharides and cellulosic ethanol from steam-exploded barley straw
- A commercial laccase-mediator system to delignify and improve saccharification of the fast-growing Paulownia fortunei (Seem.) Hemsl.
- Organosolv pretreated beech wood as a substrate for acetone butanol ethanol extractive fermentation
- Fine-fibrous cellulose II aerogels of high specific surface from pulp solutions in TBAF·H2O/DMSO
- Oil-absorbing porous cellulosic material from sized wood pulp fines
- Novel protein-repellent and antimicrobial polysaccharide multilayer thin films
- Environmental sustainability assessment of HMF and FDCA production from lignocellulosic biomass through life cycle assessment (LCA)
- Review
- Lignin-based foams as insulation materials: a review
Articles in the same Issue
- Frontmatter
- Editorial
- Advances in biorefinery research
- Original Articles
- Techno-economic feasibility of bioethanol production via biorefinery of olive tree prunings (OTP): optimization of the pretreatment stage
- Designing an olive tree pruning biorefinery for the production of bioethanol, xylitol and antioxidants: a techno-economic assessment
- Structural characteristics of lignin in pruning residues of olive tree (Olea europaea L.)
- Production of xylooligosaccharides and cellulosic ethanol from steam-exploded barley straw
- A commercial laccase-mediator system to delignify and improve saccharification of the fast-growing Paulownia fortunei (Seem.) Hemsl.
- Organosolv pretreated beech wood as a substrate for acetone butanol ethanol extractive fermentation
- Fine-fibrous cellulose II aerogels of high specific surface from pulp solutions in TBAF·H2O/DMSO
- Oil-absorbing porous cellulosic material from sized wood pulp fines
- Novel protein-repellent and antimicrobial polysaccharide multilayer thin films
- Environmental sustainability assessment of HMF and FDCA production from lignocellulosic biomass through life cycle assessment (LCA)
- Review
- Lignin-based foams as insulation materials: a review