Interfacial Polymerization of Polyamide Active Layers for the Formation of PA/PPESK NF Composite Membranes ∗

Nanofiltration (NF) membranes have been widely applied to separate or concentrate aqueous solutions containing organics or salts. The application of high temperature resistant membranes is increasingly gaining attention in industry because they have many advantages, which include flux enhancement, heat recovery, high-temperature cleaning and pasteurization [1]. But most commercial NF membranes could hardly be used when the temperature is higher than 50℃, and the research on NF and RO membranes for the treatment of high temperature effluent is still little. In this work, we report the preparation of a thermal stable composite membrane by interfacial polymerization of di-phenylene amine (MPDA) and piperazine (PIP) with hexane solutions of trimesoyl chloride (TMC) on poly(phthalazinone ether sulfone ketone)(PPESK) thermal stable ultrafiltration membranes. The interfacial polymerization process was shown i