کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
637524 | 1456153 | 2008 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Cross-linked polyimide membranes for solvent resistant nanofiltration in aprotic solvents Cross-linked polyimide membranes for solvent resistant nanofiltration in aprotic solvents](/preview/png/637524.png)
Solvent stable nanofiltration membranes were prepared through the chemical cross-linking of asymmetric Matrimid®-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/m2 bar h and rejections up to 98% for low molecular weight dyes in these demanding solvents, optimally performing, truly solvent resistant nanofiltration membranes were obtained. Nanozeolite-filled membranes were prepared in parallel to study the effect of an inorganic filler on the cross-linking reaction and performance in aprotic solvents. The outstanding stability and performance of these membranes and their easy preparation clearly offer vast potential for applications in harsh solvent environments.
Journal: Journal of Membrane Science - Volume 320, Issues 1–2, 15 July 2008, Pages 468–476