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Development of lignin based binders for pigment coating of paper

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

Project Leader
Gübitz Georg, BOKU Project Leader
Duration:
01.03.2013-31.03.2017
Programme:
COMET - K1-Zentren
Type of Research
Applied Research
Project partners
Future Lignin and Pulp Processing Research Projekt GmbH, Murmühlweg 2, 8112 Gratwein, Austria.
Contact person: DI Thomas Timmel;
Function of the Project Partner: Koordinator
Mondi Frantschach GmbH, Frantschach 5, 9413 St. Gertraud, Austria.
Function of the Project Partner: Partner
Norske Skog Bruck GmbH, Fabriksgasse 10, 8600 Bruck an der Mur, Austria.
Function of the Project Partner: Partner
Sappi Austria Produktions-GmbH & Co. KG, Brucker Straße 21, 8101 Gratkorn, Austria.
Function of the Project Partner: Partner
Technical University Graz, Austria.
Function of the Project Partner: Partner
University of Graz, Universitätsplatz 3, 8010 Graz, Austria.
Function of the Project Partner: Partner
Zellstoff Pöls Aktiengesellschaft, Dr. Luigi Angeli-Straße 9, 8761 Pöls, Austria.
Function of the Project Partner: Partner
Staff
Nyanhongo Gibson Stephen, Sub Projectleader
Ortner Andreas, Co-worker
BOKU Research Units
Division of Chemistry of Renewable Resources
Institute for Environmental Biotechnology
Institute of Wood Technology and Renewable Materials
Funded by
Austrian Research Promotion Agency, Sensengasse 1, 1090 Wien, Austria
Abstract
The Future Lignin and Pulp Processing Research (FLIPPR) is a multi-Institutional Austrian K-Project aimed at developing high value products from low value by-products generated during Pulp and Paper processing. To this effect our group is involved in developing laccase based processes for upgrading lignin (lignosulphonates, kraft lignin, organosolv lignin, mechanical pulping lignin) into a special binder suitable for application as a substitute for petroleum based none renewable emulsion polymers like styrene butadiene or styrene acrylic latex in paper and board coating formulations. Thus, in addition to replacing none renewable resources, this project is very important because it opens new possibilities for increasing the industrial application of lignin from the current <2 % commercially exploited. Industrial application of lignin has been limited due to its low entropy, polydispersity, heterogeneity. In this study laccase is used to generate lignin reactive species ideal for producing a reactive binder. Standard pre- and topcoat coating formulations designed for offset and rotogravure printing processes as used by the company partners will be prepared in a laboratory mixer with partial or complete replacement of latex by the modified lignins. The upgrading of small fibre fraction and fibre rejects into valuable materials will also be investigated. Process for surface modification of these low grade fibre material aimed at introducing new functionalities e.g. crosslinking functional molecules like bifunctional and trifunctional chemical crosslinkers are envisaged. These surface-modified fibres will either be returned into the papermaking process thereby acting as agents with special positive effects on the paper product (strength properties, fibre-fibre bonding, improved binder retention), or used in other industries as raw materials with special properties, such as gelling agents or polymer fillers etc.
Keywords
raw material research, - economics; recycling; biotechnology;
Bioactive Polymers; Enzymes;
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