| 摘要 |
PURPOSE:To obtain a fiber for the adaptation to filter cloth by setting zeta potential showing the magnitude of the positive charge on the surface of a monofilament and monofilament fineness to specific relation to remarkably enhance the catching effect of colloidal particles or bacteria. CONSTITUTION:In a fiber wherein the surface of a monofilament is positively charged, zeta potential zeta(mV) showing the magnitude of charge and monofilament fineness (d) (denier) are set so as to satisfy the relation of zeta>=2d. As a result, a functional fiber for the adaptation to filter cloth remarkably enhancing the catching effect of colloidal particles or bacteria can be obtained. Filter cloth having large void volume can be constituted by this functional fiber. This filter cloth is used as wet filter cloth to make it possible not only to increase the treatment speed of sewage but also to reduce clogging. Further, this filter cloth is used as dry filter cloth to be capable of being adapted to an air purifying filter collecting permanent suspended dust, bacteria or virus in the atmosphere. |
