【摘 要】
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Hybrid membranes combining the merits of both polymer matrices and fillers have drawn extensive attention.The rational design of polymer-filler interface in hyb
【机 构】
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Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering
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Hybrid membranes combining the merits of both polymer matrices and fillers have drawn extensive attention.The rational design of polymer-filler interface in hybrid membranes is vitally important for reducing the occurrence of void defects.Herein,imine-type covalent organic frameworks(COFs)were selected as the fillers due to their totally organic nature and multi-functionalities.Mussel-inspired dopamine-modified sodium alginate(AlgDA)was syn-thesized as the polymer matrix.The dopamine modification significantly improves the AlgDA-COF compatibility,which enhances the COF content up to 50 wt％in the hybrid membranes.The improved interfacial compatibility en-hances the membrane separation selectivity.Accordingly,when utilized for dehydration of ethanol/water mixed so-lution(water concentration of 10 wt％),the hybrid membrane reveals high water concentration of～98.7 wt％in permeate,and stable permeation flux larger than 1500 g·m-2·h-1.This work might afford useful insights for fab-ricating hybrid membranes with high separation selectivity by optimizing the polymer-filler interface.
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任钢,男,中共党员,1963年5月出生于浙江东阳,1985年7月毕业于青海大学农学系 植物保护专业,农学学士,1985年7月参加工作,现任海西州农科所所长、海西州农技推广站站长、二级
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