Standard Test Method for Viscosity of Cellulose by Cuprammonium Ball Fall

Importancia y uso:

5.1 This test method is suitable for use as a rapid control test for pulp manufacture or for careful determination of the viscometric molecular weight of purified cotton or wood derived pulps.

5.2 This test method is applicable over a very large range of cellulose molecular weights because seven sample sizes are defined. (Sample weights are reduced as cellulose molecular weight increases.)

5.3 Cotton and high molecular weight pulps may be difficult to dissolve. (Warning—This test method is only valid if the sample dissolves completely without gels.)

Subcomité:

D01.36

Volúmen:

06.03

Número ICS:

85.040 (Pulps)

Palabras clave:

ball fall viscosity; cellulose; cuprammonium; DP; molecular weight; process control; viscosity;