Procedure for determining the viscosity of 0.5% cellulose solutions, using 0.5 M Cupriethylenediamine as a solvent and a capillary viscometer.
Measurements may be made on bleached cotton and wood pulps.
Applicable of this procedure to extended delignification pulps has not been determined Technique involves mechanical shaking of the sample-solvent mixture in a closed bottle . Containing glass beads.
Next technique involves stirring the sample and solvent in an open tube with a copper rod.
Viscosity of a pulp gives the average degree of polymerization of the cellulose.
