Bound water refers to moisture that is intimately associated with the finer wood elements of the cell wall by adsorption and held with sufficient force to reduce the vapour pressure. It is also known as adsorbed moisture or hygroscopic moisture. Bound water is chemically bonded to the cellulose molecules and energy is required to break that bond.
water found within the cell wall of wood.
water that is osmotically inactive (i.e., water bound in the structure of macromolecules, such as proteins)
Water within the cell wall of wood. Loss of bound water results in dimensional shrinkage.
Water held by the cell and not released if freezing occurs in the intercellular space. cf free water.
Water molecules bound into the cell wall of timber. They are weakly bound chemically to the molecules of the cell wall and energy is required to break them free.
In a moist solid to be dried, that portion of the water content which is chemically combined with the solid matter.
Water in wood that is associated with the cell wall material. Wood does not shrink until after bound water starts to leave the cells.
(1) Water which has become adsorbed to the surfaces of solid particles or grains. Under natural conditions, this water is viscous like and immobile but might not have lost its electrolytic properties. See also adsorption and water wet.
