| 摘要 |
PURPOSE:To polymerize a residual monomer in a polymer molding and simulta neously sterilize the molding safely by irradiating it with electron beams to give it a specified amt. of energy. CONSTITUTION:A medical polymer molding which is produced from a polymer material, such as a polystyrene, contg. an unreacted monomer (e.g., an artificial organ, a catheter, a sewing thread, or a blood bag) or a package of the molding is irradiated with electron beams in such a way that the molding or package is given an energy of 2.5-30Mrad. Thus, the unreacted monomer polymerizes to increase the mechanical strengths of the molding, enabling the production, from a cheap polymer (e.g., a PS), of it having qualities comparable with those of one produced from a high-quality polymer (e.g., a PP). Simultaneously, the molding is sterilized without using a sterilizing gas, eliminating fear of cancinogenicity due to the remaining gas. |
