(376az) A Thin Film Composite Membrane Prepared from Monomers of Guaiacol and Trimesoyl Chloride for Organic Solvent Nanofiltration

Organic solvent nanofiltration (OSN) membranes have shown promising applications in the recovery of antibiotic residues in organic solutions and the separation of homogeneous catalysts in organic mixtures. For the strong polar organic solvents including tetrahydrofuran (THF), N,N-dimethylformamide (DMF), N-methyl pyrrolidone (NMP), dimethyl sulfoxide (DMSO), etc., there still need rational approaches to explore solvent resistant polymeric NF membranes with high separation performance. Guaiacol (GA) and trimesoyl chloride (TMC) were adopted as the monomers to synthesize a hydrophobic polyarylester OSN membrane via interfacial polymerization on the ethylenediamine cross-linked poly(ether imide) substrate. The optimal NF-3GA membrane exhibits the higher stability in THF and the superior separation performance with the rejection of 96% for Rose Bengal (RB) and a THF permeance of 76 L m^-2 h^-1 MPa^-1. The relationship between the membrane permeance and the membrane-solvent solubility parameter distance were analyzed using Hansen solubility parameter methods. The results provide a promising route for the selection of monomers to synthesize OSN membranes with high separation performance.