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ENLIGMA: N-modified LIGnins as a source for functional MAterials

Subproject of: Modular Biorefinary for the complete material utilisation of lignocellulose (Ligno-D)

Project Leader
Liebner Falk, BOKU Project Leader
Duration:
01.05.2012-15.02.2014
Type of Research
Applied Research
Staff
BOKU Research Units
Division of Chemistry of Renewable Resources
Division of Organic Chemistry
Institute of Biotechnology
Institute of Wood Technology and Renewable Materials
Funded by
Austrian Research Promotion Agency, Sensengasse 1, 1090 Wien, Austria
Abstract
N-modified lignins can be obtained economically by ammoxidation of lignocellulosic materials under mild conditions. Because of their resemblance to natural humic substances (total N contents, C / N ratios, content of various N bond forms that mineralize at different rates in the soil and thus have a long-term fertilization effect, cation exchange capacity), they are promising products for the initial planting / reclamation of degraded soils.
In the frame of the module ENLIGMA: N-modified LIgnins as a basis for functional MAterials, it will be studied to what extent certain lignin fractions from a modular biorefinery approach can be used for the production of the above-described artificial humic substances. Furthermore it will be checked if mechanically stable hydrogels can be obtained by cross-linking of the obtained N-lignins which would be of great benefit if such soil improving materials would be used for rehabilitation in aride regions. Replacement of phenol by N-lignins in the production of phenol-formaldehyd resins will be another focus of ENLIGMA.
Keywords
analytical chemistry; organic chemistry; polymer chemistry; Environmental chemistry; renewable resources; wood chemistry;
Ammonoxidation; Humic substances; Hydrogels; N-modified lignins;
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