| abstract |
(57) Abstract: In a polyketone molded article composed of a polyketone composed of an olefin and a carbon monoxide copolymer, 5 pores having an average pore diameter of 0.001 to 10 μm are formed. A polyketone porous material containing about 70% by volume. A polyketone hollow fiber, wherein the hollow fiber has at least one void penetrating in the longitudinal direction, wherein the ratio of the void is 10 to 80% by volume. [Effect] It has a large number of micropores inside and is excellent in strength, dimensional stability, chemical resistance, and heat resistance, and is particularly useful as a separation membrane for aqueous solutions, organic solutions, electrolyte solutions, biological fluids, and dialysis membranes. |