首页|The Effect of Component Removal Upon the Porous Structure of the Cell Wall of Wood.II.Swelling in Water and the Fiber Saturation Point
The Effect of Component Removal Upon the Porous Structure of the Cell Wall of Wood.II.Swelling in Water and the Fiber Saturation Point
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NSTL
The fiber saturation point is defined as the amount of water contained within the water-saturated cell wall.Previous techniques for the determination of the fiber saturation point of wood and pulp fibers are criticized and it is suggested that the values of about 0.3 g/g frequently quoted in the literature are too low.Two entirely independent methods for finding the true fiber saturation point are presented and the results by both methods are in agreement.The fiber saturation point of air-dried and re-swollen black sprucewood was found to be 0.4 g/g rising to 1.2 g/g as the wood was pulped by the kraft process to progressively lower yields.A method of calculating the relative changes in water-swollen cell wall thickness from changes in the fiber saturation point is given,and the changes brought about by kraft pulping are calculated and discussed in terms of cell wall structure.
NSTL
