Abstract
Wood can be modified by either physical or chemical means, or their combination. Modifications to be considered in this chapter involve either impregnation with chemicals, densification under heat and pressure, or their combination. Impregnations involve depositing chemicals in the microscopically visible void structure or within the cell walls, or reacting the chemicals with the cell wall components without breaking down the wood structure. These impregnation treatments are made to impart decay resistance, fire retardance and/or dimensional stability to the wood, or to improve specific strength properties. The first two of these objectives can be accomplished by merely depositing either toxic or fire retardant chemicals in the void structure. When water borne chemicals are used they are partially deposited within the cell walls of the wood. Permanent dimensional stability, on the other hand, is imparted to wood only when the chemicals are deposited within the cell walls or chemically react with the cell wall components.
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Stamm, A.J. (1975). Solid Modified Woods. In: Principles of Wood Science and Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-87931-9_2
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