Development of lignin based binders for pigment coating of paper
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.
Enzymes Bioactive Polymers
Publikationen
Project staff
Georg Gübitz
Univ.Prof. Dipl.-Ing. Dr.techn. Georg Gübitz
guebitz@boku.ac.at
Tel: +43 1 47654-97001, 97402
BOKU Project Leader
01.03.2013 - 31.03.2017
Gibson Stephen Nyanhongo
Priv.-Doz. Dr. Gibson Stephen Nyanhongo
g.nyanhongo@boku.ac.at
Sub Projectleader
01.03.2013 - 31.03.2017
BOKU partners
External partners
Mondi Frantschach GmbH
none
partner
Norske Skog Bruck GmbH
none
partner
Zellstoff Pöls Aktiengesellschaft
none
partner
Future Lignin and Pulp Processing Research Projekt GmbH
DI Thomas Timmel
coordinator
Sappi Austria Produktions-GmbH & Co. KG
none
partner
Technical University Graz
none
partner
University of Graz
none
partner