| 摘要 |
A substantially dry, flexible, nonwrinkled, stabilized semipermeable polyether-polycarbonate block copolymer hemodialysis membrane containing therein a water-soluble polyol and having the ability after being rewetted with water to be used in a hemodialysis apparatus as a means for preferential removal of middle molecular weight molecules from blood, said polyether-polycarbonate block copolymer containing 5% by 35% by weight of repeating alkylene ether carbonate units and from 95% to about 65% by weight of repeating bisphenol A-carbonate units, said membrane being prepared by imbibing into the water-wet membrane a solution of the polyol in water or a volatile lower alkanol, and removing the water of lower alkanol, leaving the pores or voids in the membrane substantially occupied by the poyol.
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