The substance which constitutes the essential part of the solid framework of plants, of ordinary wood, cotton, linen, paper, etc. It is also found to a slight extent in certain animals, as the tunicates. It is a carbohydrate, (C6H10O5)n, isomeric with starch, and is convertible into starches and sugars by the action of heat and acids. When pure, it is a white amorphous mass. See Starch, Granulose, Lignin.
The preponderant and essential constituent of all vegetable tissues and fibres. Basic in the textile and paper making industries. Three types exist in alpha-cellulose, beta-cellulose and gamma-cellulose. Material used in filter medium is bound by impregnation, usually a phenolic resin. Process of manufacture controls the basic weight and pore size to specification. Filter paper, when impregnated with other properties, produces an excellent hydrophobic membrane which is non-water wetting and is used in the second stage of two stage filtration separation equipment. Ideal cellulose material provides for a variety of filtration efficiencies, low initial pressure drop, high wet strength and solids retention.