Tuning the pore size in gradient poly(ionic liquid) membranes by small organic acids
作者： Karoline Täuber , Qiang Zhao , Markus Antonietti , Jiayin Yuan
DOI: 10.1021/MZ500674D
关键词:
摘要: Highly charged porous polymer membranes with adjustable pore size and gradient structure along the membrane cross-section were prepared by ammonia-triggered electrostatic complexation between an imidazolium-based cationic poly(ionic liquid) (PIL) multivalent benzoic acid derivatives. The PIL compound first dissolved homogeneously in DMSO, cast into a thin film onto glass plate, dried, finally immersed aqueous ammonia solution. diffusion of from top to bottom neutralized introduced situ cross-linking fix pores. its distribution found controllable terms multivalency acids, imidazolium/carboxylate ratio, nature counteranion.
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