Abstract
Usinga queous solutions of polyethylene oxides of various degrees of polymerisation as dispersing agent, paper making by means of Japanese tradional hand-process was studied.
Concerningthe dispersibility, some properties of the solution of polyethylene oxide were also investigated.
Results obtained are summarized as follows.
1) Water soluble polyethylene oxide can be used as the dispersing agent in the paper making, and the dispersibility is generally proportional to degree of polymerization of the polymer. The paper making properties of the solution, however, differ from those of Tororo-aoi mucilage.
2) Block copolymer of propylene oxide and ethylene oxide has not the dispersibility, but the mixture of the block copolymer and polyethylene oxide indicates good dispersibility.
3) The dispersibility of polyethylene oxide is improved by adding sodium alginate or CNIC, but the paper making properties of the solution differ appreciably from those of Tororo-aoi mucilage.
4) Addition of phosphates has no influence upon the dispersibility of polyethylene oxide.
5) Paper made up by use of polyethylene oxide as the dispersing agent has somewhat worse texture but rather better toughness than that made up by using Tororo-aoi mucilage.
6) Viscosity and filterability of the solution of polyethylene oxide and sedimentation velocity of pulp fibers in the solution have not direct relation to the dispersibility of the solution.
