Separation functional fibers by radiation induced graft polymerization and application

Commercially available non-woven fabric made of polyolefines was used as trunk polymer for radiation induced graft polymerization (RIGP). Ion exchange, antimicrobial and catalytic function was introduced on the fabric by RIGP. All of these materials are commercialized. Ion exchange fabric prepared by RIGP are applied for chemical filter to remove ionic impurities in semiconductor factory and are also applied for continuous de-ionization apparatus to make pure water in combination with ion conductive spacer. Polyvinylpyrrolidone–iodide grafted fabric was produced as antimicrobial fabric and applied for mask. Metal oxide nanoparticle was immobilized onto the ion exchange fabric. This material has catalytic function and was applied for the removal of ozone from air. In all of these applications, long sheets of non-woven fabrics are applied as a trunk polymer. Manufacturing process of RIGP for long sheet is also reported here.