Article
Licensed
Unlicensed Requires Authentication

The effect of (induced) dislocations on the tensile properties of individual Norway spruce fibres

  • , , and
Published/Copyright: December 5, 2007
Holzforschung
From the journal Volume 62 Issue 1

Abstract

Axial compressive stresses can cause distortion of the cellulose fibril alignment in the wood cell wall. These deformations are thought to occur in the living tree and/or to develop during wood processing and seem to adversely affect the mechanical properties of pulp and paper and other fibre-based products. To characterise the influence of dislocations on the mechanical properties of the unmodified cell wall, dislocations were artificially created by applying high compression loads to wood blocks parallel to the fibre axis. Mechanically isolated fibres containing different levels of dislocations were then subjected to tensile tests. Comparison between micromechanical properties of reference fibres and fibres that were artificially loaded in compression revealed the importance of dislocations for the mechanics of both earlywood and latewood. However, the tensile strength (decrease ∼19% for earlywood and ∼26% for latewood) was less affected than expected from structural observations of the pre-compressed zones.

Keywords: cell wall; dislocations; mechanical properties; microscopy
Corresponding author. Department of Biomaterials, Max-Planck Institute of Colloids and Interfaces, Wissenschaftspark Golm, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
Received: 2007-6-7
Accepted: 2007-8-13
Published Online: 2007-12-05
Published in Print: 2008-1-1

©2008 by Walter de Gruyter Berlin New York

Articles in the same Issue

  1. Meetings
  2. Evaluation of Eucalyptus grandis Hill ex Maiden biopulping with Ceriporiopsis subvermispora under non-aseptic conditions
  3. Paper dry strength improvement by xyloglucan addition: Wet-end application, spray coating and synergism with borate
  4. A new and facile method for isolation of lignin from wood based on complete wood dissolution
  5. Isolation and characterization of lignins from Eucalyptus grandis Hill ex Maiden and Eucalyptus globulus Labill. by enzymatic mild acidolysis (EMAL)
  6. Fractionation and characterization of xylan rich extracts from birch
  7. Polyoxometalate (POM) oxidation of lignin model compounds
  8. Pyrolytic cleavage mechanisms of lignin-ether linkages: A study on p-substituted dimers and trimers
  9. Polysaccharide degradation in waterlogged oak wood from the ancient warship Vasa
  10. Degradation of polyethylene glycol and hemicellulose in the Vasa
  11. Selection criteria of Eucalyptus globulus Labill. for production of chemithermomechanical pulps (CTMP)
  12. The effect of (induced) dislocations on the tensile properties of individual Norway spruce fibres
  13. Mode I and Mode II fracture toughness of densified Sitka spruce fabricated in an airtight atmosphere with high-temperature steam
  14. Characteristic properties of embedding strength for the nailing of the gonfolo rose (Qualea rosea Aubl.)
  15. Adhesive penetration of wood cell walls investigated by scanning thermal microscopy (SThM)
  16. Laboratory screening of tropical hardwoods for natural resistance to the marine borer Limnoria quadripunctata: The role of leachable and non-leachable factors
  17. Decay resistance of wood treated with amino-silicone compounds
  18. Hydrothermal treatment of mixed preservative-treated wood waste
  19. Variation of tracheid length within annual rings of Scots pine and Norway spruce
https://doi.org/10.1515/HF.2008.011
Keywords for this article
cell wall; dislocations; mechanical properties; microscopy

Articles in the same Issue

  1. Meetings
  2. Evaluation of Eucalyptus grandis Hill ex Maiden biopulping with Ceriporiopsis subvermispora under non-aseptic conditions
  3. Paper dry strength improvement by xyloglucan addition: Wet-end application, spray coating and synergism with borate
  4. A new and facile method for isolation of lignin from wood based on complete wood dissolution
  5. Isolation and characterization of lignins from Eucalyptus grandis Hill ex Maiden and Eucalyptus globulus Labill. by enzymatic mild acidolysis (EMAL)
  6. Fractionation and characterization of xylan rich extracts from birch
  7. Polyoxometalate (POM) oxidation of lignin model compounds
  8. Pyrolytic cleavage mechanisms of lignin-ether linkages: A study on p-substituted dimers and trimers
  9. Polysaccharide degradation in waterlogged oak wood from the ancient warship Vasa
  10. Degradation of polyethylene glycol and hemicellulose in the Vasa
  11. Selection criteria of Eucalyptus globulus Labill. for production of chemithermomechanical pulps (CTMP)
  12. The effect of (induced) dislocations on the tensile properties of individual Norway spruce fibres
  13. Mode I and Mode II fracture toughness of densified Sitka spruce fabricated in an airtight atmosphere with high-temperature steam
  14. Characteristic properties of embedding strength for the nailing of the gonfolo rose (Qualea rosea Aubl.)
  15. Adhesive penetration of wood cell walls investigated by scanning thermal microscopy (SThM)
  16. Laboratory screening of tropical hardwoods for natural resistance to the marine borer Limnoria quadripunctata: The role of leachable and non-leachable factors
  17. Decay resistance of wood treated with amino-silicone compounds
  18. Hydrothermal treatment of mixed preservative-treated wood waste
  19. Variation of tracheid length within annual rings of Scots pine and Norway spruce
Downloaded on 12.4.2026 from https://www.degruyterbrill.com/document/doi/10.1515/HF.2008.011/html
Scroll to top button