菜種茎パルプの研究

I. クラフト法による蒸解

抄録

I reported the chemical compositions and the quality of cellulose of the stalk of rape-seed and concluded that it was simillar to the stalk of cotton.So in this paper, to utilize it, I attempt pulping of it by sulphate method.In the case of 26% sulphidity and 25% total alkali, pulp is easy bleach and lower yield (43%).But in the case of 26% sulphidity and 17% total alkali, pulp is : strong, deep colour, difficult to bleach and high yield. (48%).
In the case of 13% sulphidity, even 20% total alkali, pulp is very easy bleach.
Generally rape-seed pulp is easy, to wet beating and as strong as hardwood pulp.