The Meaning of Bartunek's “ Sulphrierung-Widerstand ”

Abstract

Bartunek's “ M.W.” and “ S.W.” methods have been used to estimate the reactivity of pulp. In using this method, a number of question arise, because of the complexity of the properties of the pulps and the viscose production process.
The authors measured the “ S.W.” values with linter, sulphate, and sulphite-pulps, according to Bartunek's method.
In order to compare Bartunek's “ S.W.” value, with the solubility of xanthate from the normal viscose production process, we investigated the relation between this value and the sulphidity (γ-value) and the amount of crystalline fraction in the undissolved residue.