| 摘要 |
Disclosed is a hollow fiber membrane having hexagonal voids, suitable for use in high throughput filtration applications. Thus, the membrane includes (i) an inner surface; (ii) an outer surface; and (iii) a porous bulk disposed therebetween, wherein the porous bulk comprises at least a first region including: a) a first set of pores having a first controlled pore size and having outer rims; b) a second set of pores connecting the outer rims of the first set of pores, wherein the pore size of the first set of pores is greater than the pore size of the second set of pores; and c) a polymer matrix supporting the first set of pores. Also disclosed is a method for preparing such hollow fiber membranes, which involves coating a filament with a coating composition that includes a membrane-forming polymer and dissolvable nanoparticles, followed by phase invention, and dissolving of the nanoparticles. The filament is removed to obtain the hollow fiber membrane. |
