Strength altered composition effects

This chapter presents a theoretical model to explain the relationship between the mechanical properties and the chemical components of wood. This model is then used to describe the effects of altered composition on those mechanical properties. Many of the theories presented are unproven. They should be considered as a starting point for dialogue between chemists and engineers that will eventually lead to a better understanding of the chemistry of wood strength. 

The interaction of materials at the interface is integral to composite performance, and this can be affected by the tissue response in various ways, such as filling and swelling of interfacial voids with fluid and fibrous tissue, altering the interfacial adhesion strength between matrix and reinforcement, and delamination of laminate composites. Such effects can lead to failure of a composite, particularly in structural applications. 

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