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Köhnlein, M., Abitbol, T., Osório Oliveira, A., Magnusson, M., Adolfsson, K., Svensson, S., . . . Zamani, A. (2022). Bioconversion of food waste to biocompatible wet-laid fungal films. Materials & design, 216, Article ID 110534.
Open this publication in new window or tab >>Bioconversion of food waste to biocompatible wet-laid fungal films
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2022 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 216, article id 110534Article in journal (Refereed) Published
Abstract [en]

The fungus Rhizopus delemar was grown on bread waste in a submerged cultivation process and wet-laid into films. Alkali or enzyme treatments were used to isolate the fungal cell wall. A heat treatment was also applied to deactivate biological activity of the fungus. Homogenization of fungal biomass was done by an iterative ultrafine grinding process. Finally, the biomass was cast into films by a wet-laid process. Ultrafine grinding resulted in densification of the films. Fungal films showed tensile strengths of up to 18.1 MPa, a Young's modulus of 2.3 GPa and a strain at break of 1.4%. Highest tensile strength was achieved using alkali treatment, with SEM analysis showing a dense and highly organized structure. In contrast, less organized structures were obtained using enzymatic or heat treatments. A cell viability assay and fluorescent staining confirmed the biocompatibility of the films. A promising route for food waste valorization to sustainable fungal wet-laid films was established. © 2022 The Authors

Place, publisher, year, edition, pages
Elsevier Ltd, 2022
Keywords
Biocompatible, Filamentous fungi, Food waste, Ultrafine grinding, Wet-laid film, Zygomycetes, Bioactivity, Elastic moduli, Fungi, Grinding (machining), Heat treatment, Tensile strength, Alkali treatment, Cultivation process, Filamentous fungus, Organized structure, Rhizopus delemar, Submerged cultivation, Ultra-fine grinding, Biocompatibility
National Category
Other Industrial Biotechnology
Identifiers
urn:nbn:se:ri:diva-58887 (URN)10.1016/j.matdes.2022.110534 (DOI)2-s2.0-85126375844 (Scopus ID)
Note

Funding details: VINNOVA, 2018-04093; Funding text 1: This work was supported by Vinnova, Sweden through the project Sustainable Fungal Textiles: A novel approach for reuse of food waste [Reference number: 2018-04093].

Available from: 2022-03-30 Created: 2022-03-30 Last updated: 2022-03-30Bibliographically approved
Magnusson, M. & Holmqvist, C. (2019). Textile-like materials with foam forming on a paper machine. In: PaperCon 2019: Proceedings. Paper presented at PaperCon 2019. Proceedings of a conference held in Indianapolis, Indiana, USA, 5-8 May 2019. TAPPI Press, Article ID PF3.2.
Open this publication in new window or tab >>Textile-like materials with foam forming on a paper machine
2019 (English)In: PaperCon 2019: Proceedings, TAPPI Press, 2019, article id PF3.2Conference paper, Published paper (Other academic)
Abstract [en]

Research has been carried out into the possibility of producing a paper with textile-like characteristics on a paper machine. The furnish used consisted of a mixture of 25% bleached softwood kraft pulp refined to 30 SR, 25% dissolving pulp and 50% synthetic fibres. The latter fraction consisted of 15% sort-cut (4mm) polylactic acid (PLA) fibres and 35% viscose fibres cut to 5-8mm. A commercial surfactant was used as foaming aid and sheets were formed on a pilot machine from a bubbly dispersion (foam forming). A production method was developed in which the synthetic fibres were only injected intermittently into the pulp flow. Sheets containing 35% of 8mm long viscose fibres, 25% kraft pulp, 25% dissolving pulp and 15% of 4mm long PLA fibres were successfully produced. Sheets had good formation with furnish air fractions as low as 25%. The sheets made from the mixture of kraft pulp and synthetic fibres had softness comparable with facial wipes and other tissue products while also having significantly higher tensile strength. Proactive adjustment of the surfactant addition enabled the surface tension and the forming process to be stably maintained during the sudden changes in the fibre feed flows.

Place, publisher, year, edition, pages
TAPPI Press, 2019
Keywords
textile; synthetic fibre paper; foam forming; surfactant; paper properties; softness; process analysis
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-40588 (URN)
Conference
PaperCon 2019. Proceedings of a conference held in Indianapolis, Indiana, USA, 5-8 May 2019
Available from: 2019-10-28 Created: 2019-10-28 Last updated: 2024-05-22Bibliographically approved
Sterner, M. & Magnusson, M. (2017). Innovative paper-technology for novel longitudinally corrugated layers. In: Paper Conference and Trade Show: Renew, Rethink, Redefine the Future, PaperCon 2017. Paper presented at Paper Conference and Trade Show: Renew, Rethink, Redefine the Future, PaperCon 2017; Minneapolis; United States; 23 April 2017 through 26 April 2017 (pp. 912-916). TAPPI Press, 2
Open this publication in new window or tab >>Innovative paper-technology for novel longitudinally corrugated layers
2017 (English)In: Paper Conference and Trade Show: Renew, Rethink, Redefine the Future, PaperCon 2017, TAPPI Press, 2017, Vol. 2, p. 912-916Conference paper, Published paper (Other academic)
Abstract [en]

A novel longitudinally corrugated paper-layer in continuous production has been generated out of an innovative technology for imparting customized stretch to fibrous webs. Traditional corrugated board consists in a transversally corrugated layer (fluting) which is glued to at least one second layer (liner) for holding the corrugations in place. The novel longitudinally corrugated layer is produced as a stable wave structure without the need of gluing on a second sheet. For additional stiffness in MD and in CD in a final panel, said layer can be combined to any traditionally produced corrugated material. The technology on which this novel longitudinally corrugated paper-layer is based, can also impart separately both CD and MD stretch to paper for the generation of 3D-deformed patterns in order to e.g. stiffen the corrugated board with appropriate structures, or to create layers with 3D-impressions for communication or aesthetic purposes.

Place, publisher, year, edition, pages
TAPPI Press, 2017
Keywords
fluting, corrugated board, wave structure, layer, stiffness
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-33330 (URN)2-s2.0-85041525816 (Scopus ID)
Conference
Paper Conference and Trade Show: Renew, Rethink, Redefine the Future, PaperCon 2017; Minneapolis; United States; 23 April 2017 through 26 April 2017
Note

cited By 0

Available from: 2018-02-28 Created: 2018-02-28 Last updated: 2018-08-15Bibliographically approved
Sterner, M. & Magnusson, M. (2017). Innovative technology for making improved paper from the poorest fibers. TAPPI Journal, 16(11), 633-637
Open this publication in new window or tab >>Innovative technology for making improved paper from the poorest fibers
2017 (English)In: TAPPI Journal, ISSN 0734-1415, Vol. 16, no 11, p. 633-637Article in journal (Refereed) Published
Abstract [en]

The trademarked Papermorphosis technology, consisting of two novel units for separately increasing cross direction (CD) and machine direction (MD) elongation over purely mechanical processes, has been successfully tested on recycling fiber, reaching high elongation values in each direction of over 15% in CD or 20% in MD. Increase of elongation has also had a positive influence on the relative tensile energy absorption (TEA) values in CD and MD. It is well known that mechanical properties in paper basically depend on fiber choice, headbox properties, and refining. With the novel system, elongations in cross direction (CD) and machine direction (MD) can be individually customized, even in paper grades with lower strength deriving from recycled fiber. Customizing elongations also has the effect of improving or better balancing TEA values in both directions. The aim is to improve existing recycling papers and to broaden the use of recycling fiber with respect to the past.

Keywords
paper making, recycled fibre, elongation
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-32948 (URN)2-s2.0-85037745100 (Scopus ID)
Available from: 2018-01-02 Created: 2018-01-02 Last updated: 2023-03-23Bibliographically approved
Aldaeus, F., Dedic, D., Karpenja, T., Magnusson, M., Rosén, F., Sundin, K., . . . Modorato-Rosta, C. (2017). Towards a cellulose-based society: current market and consumer trends. In: The 7th Nordic Wood Biorefinery Conference held in Stockholm, Sweden, 28-30 Mar. 2017: NWBC 2017. Paper presented at 7th Nordic Wood Biorefinery Conference held in Stockholm, Sweden, 28-30 Mar. 2017 (pp. 1). Stockholm: RISE Bioekonomi
Open this publication in new window or tab >>Towards a cellulose-based society: current market and consumer trends
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2017 (English)In: The 7th Nordic Wood Biorefinery Conference held in Stockholm, Sweden, 28-30 Mar. 2017: NWBC 2017, Stockholm: RISE Bioekonomi , 2017, p. 1-Conference paper, Published paper (Other academic)
Abstract [en]

It has been proposed that the future of the forest industry will involve the traditional value chains combined with the needs and demands of a bio-based economy. A global consumer survey was undertaken, together with interviews and workshops with various representatives through the bio-economy. Sources also included in-depth literature studies and research reviews. Based on this input, several current trends have been identified that will affect the route towards a cellulose-based society. These trends describe the effects of urbanization, consumer behaviour, new business models, material recycling, open innovation and the necessity for early demonstration of new research. Four different but equally plausible scenarios have been identified describing the society and the role of cellulose in 2030, highlighting the role of the wood-based biorefinery.

Place, publisher, year, edition, pages
Stockholm: RISE Bioekonomi, 2017
Keywords
biorefinery, cellulose, consumer, market research, market trends, survey, wood
National Category
Social Sciences Interdisciplinary
Identifiers
urn:nbn:se:ri:diva-29748 (URN)9789186018207 (ISBN)
Conference
7th Nordic Wood Biorefinery Conference held in Stockholm, Sweden, 28-30 Mar. 2017
Available from: 2017-05-31 Created: 2017-05-31 Last updated: 2023-06-08Bibliographically approved
Magnusson, M. (2016). Investigation of interfibre joint failure and how to tailor their properties for paper strength. Nordic Pulp & Paper Research Journal, 31(1), 109-122
Open this publication in new window or tab >>Investigation of interfibre joint failure and how to tailor their properties for paper strength
2016 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 31, no 1, p. 109-122Article in journal (Refereed) Published
Abstract [en]

The key property for the load carrying capacity of paper materials is the interfibre joint strength. Due to the difficulty of testing the strength of such microscopic entities, the typical approach is to test isolated fibre-fibre crosses. In such experiments the joint is but one component of the tested structure and the flexural compliance of the long fibre segments results in a mixed mode of loading. Furthermore, the details of the failure mechanisms of such joints are as of yet unknown. A continuum description of the paper sheet is often insufficient to explain governing mechanisms when properties of the underlying structure are changed by mechanical or chemical modifications. Therefore network models are often used to take into account the underlying mechanisms. However, network models in turn rely on the properties of the fibres and of the interfibre joints. This paper aims to characterize the damage behaviour of isolated fibre-fibre crosses from three approaches: identifying typical damage features from an extensive number of mechanical tests of isolated fibre-fibre crosses; study the applicability of using cohesive zones to model the failure behaviour of inter-fibre joints; and, to study the influence of fibre and joint properties to the load carrying capacity of fibre-fibre crosses. The results indicate that the strength in the normal direction is significantly lower than in the shear direction and means on how to tailor the properties of fibres and joints for increasing the load carrying capacity is suggested.

Keywords
Cohesive zone modelling, Fibre-fibre joints, Interfibre joint strength, Paper mechanics
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-12628 (URN)10.3183/npprj-2016-31-01-p109-122 (DOI)2-s2.0-84961618688 (Scopus ID)
Available from: 2016-09-15 Created: 2016-09-15 Last updated: 2020-12-01Bibliographically approved
Aldaeus, F., Dedic, D., Karpenja, T., Magnusson, M., Modorato-Rosta, C., Rosén, F., . . . Lucisano, M. (2016). Towards a cellulose-based society: current trends, future scenarios, and the role of the wood biorefinery. In: Proceedings of the 14th European workshop on lignocellulosics and pulp: . Paper presented at 14th European workshop on lignocellulosics and pulp (EWLP 2016), June 28 - July 1, 2016, Autrans, France (pp. 125-127). , 2
Open this publication in new window or tab >>Towards a cellulose-based society: current trends, future scenarios, and the role of the wood biorefinery
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2016 (English)In: Proceedings of the 14th European workshop on lignocellulosics and pulp, 2016, Vol. 2, p. 125-127Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

There is a great need to maintain research for a future in which the traditional value chains of the forest industry are combined with the needs and demands of a bio-based economy. In such a future, the pulp mill biorefinery will be a crucial node. In order to map the transformation from a fossil-based society to a cellulose-based society, a global consumer survey has been made. In addition, interviews and workshops with various players throughout the bio-economy field have been accomplished. Several current trends that affect the road to a cellulose-based society have been identified. These trends are describing the effects of urbanization, consumer behaviour, new business models, material recycling, open innovation, and the need for early demonstration of new research. The trends have been combined with uncertainties into a number of plausible scenarios describing the society and the role of cellulose in the year 2030.

Keywords
biorefinery, cellulose, trend, consumer, survey
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-29115 (URN)979-10-90188-02-0 (ISBN)
Conference
14th European workshop on lignocellulosics and pulp (EWLP 2016), June 28 - July 1, 2016, Autrans, France
Available from: 2017-03-14 Created: 2017-03-14 Last updated: 2023-06-08Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2353-086x

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