Fabrication of a porous polyimide membrane using a silicon nanowire array as a template

Facile Approaches of Polymeric Face Masks Reuse and Reinforcements for Micro-Aerosol Droplets and Viruses Filtration: A Review

“…The results show that the membrane's pore sizes were influenced by the template diameter and duration of XeF 2 etching, whereas the thickness of membranes depends on the amount of poured polyimide solution. This research was successfully conducted on membranes with pore sizes dependent on diameter templates ranging from 800 to 170 nm [33]. The smallest pore was found by applying 50 cycles of etching using a diameter template of 90 nm (as shown in Figure 3).…”

Flame-Retardant Nano-TiO2/Polyimide Composite Separator for the Safety of a Lithium-Ion Battery

“…The PI separator with excellent thermal stability is expected to be a solution, which has attracted the favor of many researchers in academia and industry. PI porous membranes are prepared via nonsolvent-induced phase inversion and electrospinning. − For instance, Zhang et al fabricated a PI separator via non-solvent-induced phase separation and a thermal imidization process, and the obtained PI separator has high thermal stability and excellent electrolyte wettability. Also, Li et al prepared PAA fibers by electrospinning technology and then improved the mechanical strength and electrochemical properties via controlling thermal imidization temperatures.…”

Osmotic energy harvesting with soft-etched nanoporous polyimide membranes

“…Polyimide (PI) foils are used for many applications because of their mechanical, chemical, and thermal stability [14]. Porous PI membranes are fabricated through chemical track etching and the multiple solvent displacement method, curing the polymer solution on a nanoporous template [15][16][17][18][19]. The conventional track-etching utilizes an inorganic etchant such as a sodium hypochlorite (NaOCl) solution for the fabrication of porous structure [20,21].…”