| 摘要 |
PROBLEM TO BE SOLVED: To obtain hydrophilic polyolefin fibers which have strong and good oxidation and alkali resistances and are useful for alkali battery separator raw materials, cement-reinforcing fibers, industrial filters, medical treatment articles, sanitary goods, and so on, by subjecting the surfaces of polyolefin fibers to an oxidation treatment using ozone-added hydrogen peroxide water. SOLUTION: This hydrophilic polyolefin fibers are obtained by subjecting the surfaces of polyolefin fibers to an oxidation treatment using ozone-added hydrogen peroxide water. Preferably, a part or all parts of at least one of polyolefin resins forming the surfaces of the fibers contain 0. 5 to 10 wt.% of a <=6C unsaturated or saturated alkyl carboxylic acid potassium and/or sodium salt having a tertiary or more carbon atom. A polyolefin forming the fibers is preferably polypropylene, and the fibers preferably have a breaking strength of >=7.1 cN/dtex. |
