Morphology Control of Polyimide-Based Membranes via Delayed Demixing for Efficient Separation of Water-in-Diesel Emulsions
Water-in-diesel emulsion separation remains challenging because finely dispersed water droplets are highly stable. Here, 4,4′-(hexafluoroisopropylidene)diphthalic anhydride (6FDA)–2,4,6-trimethyl-m-phenylenediamine (TrMPD) polyimide was synthesized and formed into asymmetric membranes by nonsolvent-induced phase sepa...