Abstract
The deformation of lignin in a continuous ball indentation test was almost entirely elastic up to a stress of 2.2 × 108 Pa (22 kg mm−2). The load versus depth of indentation curve of the lignin followed closely the classical Hertz equation thus enabling the Young's modulus of lignin to be calculated. From these results a stress-strain curve for lignin was drawn.
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References
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Visitor from Mechanical Engineering Department, University of Maryland, College Park, Md 20742, USA.
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Cousins, W.J., Armstrong, R.W. & Robinson, W.H. Young's modulus of lignin from a continuous indentation test. J Mater Sci 10, 1655–1658 (1975). https://doi.org/10.1007/BF00554925
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DOI: https://doi.org/10.1007/BF00554925