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- Introduction to forest-based bioeconomy
- Wood products
- Natural fibre products
- Man-made bio-based fibre products
- Bio-based nanomaterials
- Recycled fibre
- Pulping and biorefining
- Energy and biofuels
- Biomass chemistry and physiology
- Material testing and product properties
- Forests and other biomass resources
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Surface chemistry of fibres
After reading this article you will..
- know how fibre surface chemistry is affected by chemical treatment.
Recycled fibre
- Legislation
- Sources and quality of paper for recycling
- Recyclability of paper and board products – Deinkability
- Recycling versus recyclability
- Technical aspects of recycling
- Relevance of recyclability
- Repulpability and deinkability
- Deinkability test methods
- EPRC deinkability assessment
- Deinkability of different printed products
- Removability of adhesive applications
- EPRC assessment on removability of adhesive applications in graphic paper products
- Unit operations and equipment in recycled fibre processing
- Design of processes
- Design principles for stock preparation processes
- Process design for graphical grades, news print
- Process design for tissue
- Process design for board and packaging grades
- Reject and Sludge handling for graphical and tissue applications
- Reject and Sludge handling for board and packaging applications
- Water management
- Additives
- Deinking
- Bleaching of deinked pulp
- Process water treatment
- Sticky control – detackification
- Enzymatic solution for recycled fibres
- Papermaking potential of recycled fibre
- Differences between virgin and recycled fibre
- Repeated (manifold) recycling experiments
- Multiple papermaking with recycled fibres
- Modelling of fibre age distribution
- Special request of recycled fibre furnish in papermaking
- Effects of recycled fibre in papermaking
- Challenges of increased recycled fibre utilisation
Authors & references
Author:
Hans Putz
References:
- Alanko, K., Paulapuro, H., Stenius, P., Recyclability of thermomechanical pulp fibres. Paperi ja Puu – Paper and Timber, 77(1995) No. 5, p. 315-328
- Katz, S., Liebergott, N. and Scallan, A.M., A Mechanism for the Alkali Strengthening of Mechanical Pulps Tappi J. 64(1981) No. 7, p. 97-100
- Erikson, I., Lunabba, P. and Petterson, A., Recycling potential of printed thermomechanical fibres for newsprint. CPPA 3rd Research Forum on Recycling, Vancouver, BC, 1995
- Brandal, J. and Lindheim, A., The influence of extractives in groundwood pulp on fiber bonding. Pulp Paper Can. 67(1966) No. 10, p. 431-435
- Villför, S., Inverkan av extraktivämnen och polysackarider på egeskaper hos papper. M. Sc. Thesis, Åbo Akademi, Department of Forest Products Chemistry, Turku, Finland, 1996
- Stenius, P., Hynynen, R. and Laine, J., The surface properties of virgin and recycled fiber. Helsinki University of Technology, Interim Report of Nordpap Project: Properties of virgin and recycled fiber, Helsinki, 1996
- Okayama, T., Yoshinaga, N. and Take, Y., Effect of recycling on wetting and liquid penetration of paper. Tappi Coating Conference, TAPPI PRESS, Atlanta, 1995
- Viitaharju, P., Quality profile of European newsprint. Internal Report, UPM-Kymmene Research Department, Helsinki, 1996
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This page has been updated 16.11.2021