Deformation of the compound middle lamella in spruce latewood by micro-pillar compression of double cell walls

The mechanical integrity of the interface between two adjacent cells in spruce late wood was studied by uniaxial compression of focused ion beam machined micro-pillars of double cell walls (DCW) containing the compound middle lamella (CML). The DCW reveals a lower yield strength and stiffness than t...

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Bibliographic Details
Published in:Journal of materials science 2012-08, Vol.47 (16), p.6125-6130
Main Authors: Raghavan, Rejin, Adusumalli, Ramesh-Babu, Buerki, Gerhard, Hansen, Silla, Zimmermann, Tanja, Michler, Johann
Format: Article
Language:English
Subjects:
Cellulose
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Compressing
Crystallography and Scattering Methods
Deformation
Integrity
Ion beams
Lamella
Lignin
Materials Science
Polymer Sciences
Solid Mechanics
Stiffness
Tearing
Walls
Wood
Yield strength
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Summary:The mechanical integrity of the interface between two adjacent cells in spruce late wood was studied by uniaxial compression of focused ion beam machined micro-pillars of double cell walls (DCW) containing the compound middle lamella (CML). The DCW reveals a lower yield strength and stiffness than the secondary cell wall (S2). Failure occurs by tearing of the interface between the first (S1) and second layers (S2) of the secondary cell wall exposing the internal arrangement of the microfibrils, while the CML remains intact.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-012-6531-y