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The article introduces a detailed model for carbohydrate chemistry in kraft pulping. This article is continuation to the modeling work carried out for hot water extraction and chemical pulp bleaching. The model includes galactoglucomannan, xylan, and cellulose acid–base equilibria, in addition to peeling, stopping, and alkaline hydrolysis reactions of the same carbohydrates, as well as hexenuronic...
Ageing is an important processing step in viscose fiber production. The degree of polymerization of viscose solution is controlled by ageing of alkali cellulose for desired fiber properties. In this work, alkali cellulose was treated under typical ageing conditions for different time periods. The changes in the molecular weight distribution due to the ageing reactions were analyzed by size exclusion...
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