抄録
The preparation of water-proof ion exchange paper is carried out as follows:
(1) Wet paper is made of the fine fibrous ion exchanger having heat-adhesive property with TAPPI standard paper making machine. As reported in a previous paper, the skeletone of the ion exchanger is composed of high density polyethylene.
(2) After the wet paper is dried, it is treated with heat of 150°C for ten seconds to give water-proof properties.
The characteristics of the ion exchange paper are clarified as follows:
(a) As heat-treatment brings about adhesion between contacting points of fibrous ion exchanger, the ion exchange paper does not disperse in water even with stirring, so it can be used repeatedly.
(b) A well balanced ion exchange paper similar to filter paper is gained by adding wood pulp 30wt%.
(c) Ion exchange capacities of the ion exchange paper prepared under the optimum condition are as follows:
