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    Description

    Numerical and three-dimensional finite element models were developed to improve understanding of major factors affecting hygroelastic wood properties. Effects of chemical composition, microfibril angle, crystallinity, structure of microfibrils, moisture content, and hydrophilicity of the cell wall were included in the model. Wood from wild-type and decreased-lignin transgenic aspen (Populus tremuloides Michx.) was used for experimental validation of the computer model. The model was able to predict longitudinal elastic modulus of microfibrils and woody cell walls. The difference in longitudinal elastic properties between wild-type and genetically modified aspen wood was predicted well only when additional softening of hemicelluloses and amorphous cellulose of transgenic aspen was included in the model.

    Publication Notes

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    Citation

    Horvath, Laszlo; Peralta, Perry; Peszlen, Ilona; Csoka, Levente; Horvath, Balazs; Jakes, Joseph. 2012. Modeling hygroelastic properties of genetically modified aspen. Wood and Fiber Science. 44(1): 22-35.

    Keywords

    Cell wall, computer modeling, hydrophilicity, lignin, transgenic aspen

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https://www.fs.usda.gov/treesearch/pubs/40497