Resin Series. 1. Development of Novel Ion-Exchange Porous Membranes of Hollow-Fiber Form for Removal of Metal Ions from Ultrapure Water.

概要

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Novel porous hollow-fiber membranes containing ion-exchange groups such as sulfonic acid and iminodiacetate groups were prepared by radiation-induced graft polymerization and subsequent chemical modifications. The performance of the membrane for the removal of a trace of metal ions from ultrapure water were evaluated during permeation of the ultrapure water across the membrane. The membrane removed more than 90% of the metal ions after 300-day permeation with a high throughput of ultrapure water and no detectable release of impurities. The ion-exchange porous membranes were found to be effective in improving the quality of the ultrapure water.
日本イオン交換学会の論文