Nanoporous polymer film with the smallest pore size of 80 nm was obtained from 0.2 wt % polystyrene/dichloromethane solution at 4°C by the dip-coating method in conjunction with an evaporative humidifier. Fabrication parameters affecting the pore size such as wet coating thickness, solution temperature, and nozzle-substrate gap were varied. The distance between pores depends on the nozzle-substrate gap. For fabrication of the nanosized pores, an appropriate drying time prevents the water droplets from coalescing. Formation of the nanoporous surface structure in the films depends on the solution concentration and solution temperature preventing too rapid drying.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)