和紙抄造用粘液に関する研究　第1報

抄録

In connection with paper-making by means of Japanese traditional hand-processes, the behaviours of solutions of Tororo-aoi mucilage, sodium alginate and sodium polyphosphate were studied.
Viscosity and filterability of the solution and sedimentation velosity of pulp fibers in the solution were not found to relate so much to the dispersing and sizing properties of the solution on the paper making.
Sodium polymetaphosphate behaves comparatively similar to the Tororo-aoi mucilage.
Sodium alginate can be used only in an appreciably viscous solution in place of Tororo-aoi mucilage, and decreasing of viscosity in the sodium alginate solution is accelerated by adding hydrogen peroxide ;but the paper making properties of the solution in such a condition were found to differ much from those of the Tororo-aoi mucilage.
Dispersibility of sodium alginate solution was not found to be improved by using some surface active agents of non-ionic type.
The paper making properties of the mucilagenous solution were found to be concerned with adsorption of the mucilage on pulp fibers.
It was concluded that the mucilage is adsorped to pulp fibers in water and, cooperating with hemicellulose of the fibers, causes the fibers to be well dispersed to accomplish a good distribution of fibers in the fiber mat and prepare the superior paper.