| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyolefin molding and a crystalline polymer material excellent in compatibility in which the adsorption of blood plasma protein is restrained. SOLUTION: The biocompatibility is imparted to a polyolefin molding by controlling the molding conditions thereof in such a way that the bonding work to the molding surface of polyolefin is 15 J/m<2> or less, and the adsorptive energy of water to the surface thereof is 7.7 kJ/mol or more. The material surface in which the adsorption of blood plasma protein is restrained can be obtained by imparting orientation to the crystalline polymer material such as polyolefin. The imparting of orientation is enabled by restraining the conditions, for instance, such as the extension, injection molding, and hollow molding. The degree of orientation of 10% or more is preferable. |
