Chemical modification of short fiber fractions
Abstract
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.
Publikationen
Project staff
Thomas Rosenau
Univ.Prof. Dipl.-Chem. Dr.rer.nat. DDr.h.c. Thomas Rosenau
thomas.rosenau@boku.ac.at
Tel: +43 1 47654-77411, 77471
BOKU Project Leader
01.03.2013 - 31.03.2017
Kristina Katharina Mißbach
Kristina Katharina Mißbach
kristina.missbach@boku.ac.at
Project Staff
05.10.2015 - 31.03.2016