| 摘要 |
PURPOSE:To eliminate a decrease in the strength in repeated use by forming the title ion exchanger with a mixture contg. 5-30wt.% the carbon fiber having 0.02-0.5mum diameter and 20-10<4> aspect ratio and obtained by vapor growth. CONSTITUTION:A monomer for producing an ion exchanger, a cross-linking agent, a solvent for imparting porosity, and 5-30wt.% the carbon fiber obtained by vapor growth and having 0.02-0.5mum diameter and 20-10<4> aspect ratio are mixed. The mixture is polymerized by an ordinary method in an aq. soln. contg. a stabilizer to obtain an ion exchanger. The carbon fiber by vapor growth may contain an acidic functional group, and the group is appropriately controlled to 1-100mueq/m<2> per unit surface area of the fiber in this case. Since the obtained ion exchanger is reinforced with the carbon fiber by vapor growth, the porosity of the base body is increased, and the ion-exchange rate can be remarkably improved. |
