和紙抄造用粘液に関する研究

(第5報) ポリエチレンオキシドの抄紙性

抄録

In paper making with natural and synthetic fibers by traditional Japanese hand process, fiberdispersion capability of aqueous solution of polyethylene oxide of various degrees of polymerization was studied.
The paper making properties of the fibers in the polyethylene oxide solution were compared with these in the solution of Tororo-aoi mucilage.
Results obtained are summarized as follows.
1) The dispersion capability of polyethylene oxide to rayon, Vinylon and Kanekaron fibers is rather better than that of Tororo-aoi mucilage, but the capability to Kôzo pulp and sulphite pulp is somewhat worse than the mucilage.
2) The dispersion capabity of the polyethylene oxide depends upon its degree of polymerization; polyethylene oxide of molecular weight of 3, 000, 0004, 000, 000 shows the best capability in the paper making.
3) Filterability of each solution of minimum concentration to be able to make a paper has close relation to the dispersion capability; the solutions of high filterability show good paper making properties.
4) Sedimentation velocity of the fibers in the solution has no direct relation to the paper making properties of the solution.