A comparison of nanoindentation cell wall hardness and Brinell wood hardness in jack pine (Pinus banksiana Lamb.)

Changes of wood cell walls in response to hygro-mechanical steam treatment

“…Specifically, imaging FT-IR microscopy was utilized to track the variations in chemical structures under compression combined with steam treatment (CS-treatment) on a micrometer level. Moreover, nanoindentation, a method of mechanical testing on a submicrometer scale that highlights structural variations in biomaterials, such as wood and bamboo (Ermeydan et al, 2012;Vincent et al, 2014;Gindl et al, 2004;Gershon et al, 2010;Yu et al, 2007;Oliver & Pharr, 1992) was used. Furthermore, the influences on the earlywood and latewood structures were explored.…”

Effects of Chemical Extraction Treatments on Nano-scale Mechanical Properties of the Wood Cell Wall

“…Since then, many authors have used this method in several fields of wood research, such as characterizing the adhesive bond effect on the cell wall properties in a defined area (Konnerth and Gindl 2006), examining the effects of forest management practices on wood micro-scale properties (Duchesne et al 2011), wood property variations with cell wall characteristics (microfibril angle, cellulose, and lignin content) (Jungnikl et al 2008), wood modification Konnerth et al 2010), creep behavior of lyocell fibers (Lee et al 2007), and the effect of heat treatment on the mechanical properties of the cell wall (Zickler et al 2006). It has been hypothesized that any change observed at the smallest scale should reflect, to some extent, a change in wood properties at a larger level (Vincent et al 2014).…”

Changes in mechanical and chemical wood properties by electron beam irradiation

“…For the investigated samples the depth of indentation of the steel ball ranged from 720 to 1934 m. This fact shows that the used surface hardness test provides information on the strength of the first rows of cell walls. Moreover, the Brinell hardness of wood is subject to the natural variability depending on the wood structure and the early-/latewood ratio [19,20]. However, these implications were minimised using comparable samples and therefore, the changes in chemical components became more important.…”