| 摘要 |
The starting material used is a porous membrane of an acrylonitrile polymer, which is pretreated with a hydrazine solution, followed by pre-oxidation and carbonisation. …<??>The process allows carbon membranes having controllably adjustable pore sizes and a narrow pore size distribution to be produced. The pore sizes can be in the ultrafiltration or microfiltration ranges. …<??>The membranes are suitable for separation processes, in which chemically aggressive media are used, and for high-temperature processes. They can be employed where electrical conductivity of the membranes is required. |
