Cross-linked polyimide membranes for solvent resistant nanofiltration in aprotic solvents KU Leuven
Solvent stable nanofiltration membranes were prepared through the chemical cross-linking of asymmetric Matrimid (R)-based polyimide membranes with p-xylylenediamine. The influence of this straightforward post-treatment on membrane stability, morphology and performance in dimethylformamide (DMF), N-methylpyrrolidinone (NMP), dimethylacetamide (DMAc) and dimethylsulfoxide (DMSO) was thoroughly investigated. With permeabilities up to 5.4 l/m(2) bar ...