The significance of lignin content to the strength and elasticity of spruce wood
Abstract
The process of wood formation is influenced by genetic and environmental factors. The resulting cellular morphology as well as chemical composition determine wood properties and consequently wood material quality as desired by the end-user. One of the major polymeric compounds playing a key role with respect to important wood properties is lignin. It is widely assumed that this incrusting material's main function is to provide stiffness to the cellulose framework. However, a lack of experimental evidence concerning the role of lignin for the mechanical properties of wood is still present. As breeding programmes related to the pulp and paper sector often focus on a reduction of lignin content, the need for more experimental evidence is given. Therefore, the investigations described in this proposal will be focused on the significance of lignin to the strength and elasticity of wood. Special emphasis will be laid on the different behaviour of dry wood compared to wood in a living tree.
Wood Lignin Strength Elasticity
Publikationen
Comparing mechanical properties of normal and compression wood in Norway spruce: The role of lignin in compression parallel to the grain.
Autoren: Gindl, W. Jahr: 2002
Journal articles
Effects of cell anatomy on the plastic and elastic behaviour of different wood species loaded perpendicular to grain.
Autoren: Müller, U., Gindl, W., Teischinger, A. Jahr: 2002
Conference & Workshop proceedings, paper, abstract
Lignification of spruce tracheid secondary cell walls related to longitudinal hardness and modulus of elasticity using nano-indentation.
Autoren: Gindl, W., Gupta, H.S., Grünwald, C. Jahr: 2002
Journal articles
Longitudinal hardness and stiffness of spruce tracheid secondary cell walls related to lignification using nanoindentation
Autoren: Gindl, W., Gupta, H.S., Grünwald, C. Jahr: 2002
Conference & Workshop proceedings, paper, abstract
Axial compression strength of Norway spruce related to structural variability and lignin content
Autoren: Gindl, W., Teischinger, A. Jahr: 2002
Journal articles
Modeling the longitudinal shear properties of softwood with regard to macro- and micro-structural variability
Autoren: Müller, U., Gindl, W., Sretenovic, A., Teischinger, A. Jahr: 2004
Conference & Workshop proceedings, paper, abstract
Comparison of the block-shear test and a new modified shear test set-up for the determination of shear modulus and shear strength in a single test
Autoren: Sretenovic, A., Müller, U., Gindl, W., Teischinger, A. Jahr: 2004
Conference & Workshop proceedings, paper, abstract
Comparison of the TL-shear strength of normal and compression wood of European larch
Autoren: Gindl, W., Teischinger, A. Jahr: 2003
Journal articles
The wood fiber - Naturally optimized design for different loading situations
Autoren: Gindl, W., Müller, U. Jahr: 2003
Conference & Workshop proceedings, paper, abstract
The significance of the elastic modulus of wood cell walls obtained from nanoindentation measurements.
Autoren: Gindl, W., Schöberl, T. Jahr: 2004
Journal articles
Mechanical properties of spruce wood cell walls by nanoindentation
Autoren: Gindl, W., Gupta, H.S., Schöberl, T., Lichtenegger, H.C., Fratzl, P. Jahr: 2004
Journal articles
Variability of tree ring properties along an altidunial gradient.
Autoren: Gindl, W., Grabner, M., Jahr: 2001
Conference & Workshop proceedings, paper, abstract
Mechanics of wood and wood-fibre composites – Optimisation of shear testing and stress transfer in a single fibre composite
Autoren: Sretenovic, A. Jahr: 2004
Doctoral Thesis
Project staff
Wolfgang Gindl-Altmutter
Univ.Prof. Dipl.-Ing. Dr.nat.techn. Wolfgang Gindl-Altmutter
wolfgang.gindl@boku.ac.at
Tel: +43 1 47654-89111
Project Leader
01.03.2002 - 28.02.2004
Ulrich Müller
Priv.-Doz. Dr. Ulrich Müller
ulrich.mueller@boku.ac.at
Tel: +43 1 47654-89112
Project Staff
01.03.2002 - 28.02.2004
Aleksandra Sretenovic
Dipl.-Ing. Dr. Aleksandra Sretenovic
Sub Projectleader
01.03.2002 - 28.02.2004