首页|Fabrication of melamine-based hybrid organic membrane for ethanol/ water pervaporation
Fabrication of melamine-based hybrid organic membrane for ethanol/ water pervaporation
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NSTL
Covalent organic frameworks recently were utilized as membrane fillers for effective liquid mixture separation due to their intriguing structure. Though a facile dipcoating-wiping method, a melamine-based hybrid membrane was prepared where Chitosan (CS) was combined with SNW-1 (Schiff base network-1) on the surface of α-Al2O3 support followed by crosslinking with calcium ions, a dense SNW-1/CS layer with thickness of 550 nm was successfully fabricated for ethanol/water pervaporation. The hydrophilicity of melamine-based membranes surface was enhanced by SNW-1 incorporation with improved anti-swelling property and thermal stability. The porous structure of SNW-1 offered free volume and fast channels for water transport. Consequendy, the melamine-based membranes showed long-term stability and excellent separation factor of 373 with high permeance flux of 2.8 kg/(m~2·h).
NSTL
