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Chemical modification of short fiber fractions

Subproject of: Future Lignin and Pulp Processing Research (FLIPPR) (FLIPPR)

Project Leader
Rosenau Thomas, BOKU Project Leader
Contact person:
Henniges Ute
COMET - K1-Zentren
Type of Research
Basic Research
Odabas Nora, Co-worker (bis 31.03.2017)
Mißbach Kristina, Co-worker (bis 30.06.2016)
BOKU Research Units
Division of Chemistry of Renewable Resources
Division of Organic Chemistry
Funded by
Austrian Research Promotion Agency, Sensengasse 1, 1090 Wien, Austria
The aim of the project “chemical modification of fines” is to explore the viability of upgrading fibre fractions and fibre rejects into valuable materials rather than used as waste or low-value filler. This upgrading is based on a surface modification imparting modified properties. The surface-modified fibres will either be returned into the process acting as agents or reagents having beneficial effects on the final product (strength properties, fibre-fibre bonding, improved auxiliary retention), or be used as separate materials with special properties, such as gelling agents or polymer fillers in innovative composite materials. In the present sub-projects three modification types (hydrophilization, hydrophobization, or functionalization) will be prepared and evaluated. The surface hydrophilized products (microfibrillated or carboxyl-enriched) are expected to improve fibre-fibre bonding and mechanical properties. Apart from paper production, the products are valuable fillers in water-soluble polymers or gelling materials with exceptionally high gelling capacities. The surface-hydrophobized fibres will be tested in paper coating for synergism with and partial replacement of sizing agents. Other applications are the use as column material in separation technologies. Functionalization by crosslinking might impart improved mechanical properties by establishing covalent inter-fibre bonds.
polymer chemistry;
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