Cross-linked polyimide membranes for solvent resistant nanofiltration in aprotic solvents

Autor:	Steliana Aldea, Ivo F.J. Vankelecom, Pieter Vandezande, Katrien Vanherck
Rok vydání:	2008
Předmět:	Chemistry Filtration and Separation Biochemistry Dimethylacetamide Solvent chemistry.chemical_compound Membrane Polymer chemistry Dimethylformamide General Materials Science Pervaporation Nanofiltration Gas separation Physical and Theoretical Chemistry Polyimide
Zdroj:	Journal of Membrane Science. 320:468-476
ISSN:	0376-7388
Popis:	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/m 2 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7c6f26581342d88ba7a6410624b7f22 https://doi.org/10.1016/j.memsci.2008.04.026 Zobrazit plný text záznamu Full Text from ScienceDirect