Effects of moisture and cellulose fibril angle on the tensile properties of native single Norway spruce wood fibres

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Nils Horbelt - , Max Planck Institute of Colloids and Interfaces (Autor:in)
  • John W.C. Dunlop - , Paris Lodron Universität Salzburg (Autor:in)
  • Luca Bertinetti - , Professur für Bioprospektion, Max Planck Institute of Colloids and Interfaces (Autor:in)
  • Peter Fratzl - , Max Planck Institute of Colloids and Interfaces (Autor:in)
  • Michaela Eder - , Max Planck Institute of Colloids and Interfaces (Autor:in)

Abstract

Isolated single wood fibres with cellulose fibril angles from 10 to 43° were tested in microtensile tests under controlled temperature and relative humidity of 5, 50, 75, 90% and in the wet state. This systematic study provides experimental stiffness and strength data, calculated on cell wall cross sections. It has been shown that stiffness reduction with increasing moisture content is more pronounced in fibres with large cellulose fibril angles. Interestingly, stiffness reduction in fibres with low cellulose fibril angles has been observed for the fully hydrated state only. The experimental dataset was fed into a model to determine moisture dependent stiffness of the hemicellulose-lignin-matrix and the stresses acting on the fibrils and the matrix.

Details

OriginalspracheEnglisch
Seiten (von - bis)1305-1318
Seitenumfang14
FachzeitschriftWood science and technology
Jahrgang55
Ausgabenummer5
PublikationsstatusVeröffentlicht - Sept. 2021
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-4666-9610/work/142238929