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::: 研發成果

論文

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【年度】104 年研發成果
【項目】 論文
【領域】 關鍵技術科專
【類別】 生醫材化
計畫名稱 化工產業高值化系統技術與應用發展計畫
論文名稱 親水性表面改質交聯型聚苯并咪唑膜在四氫呋喃水溶液上滲透蒸發脫水研究
論文類型 SCI期刊
發表處 J. of Membrane Science 475(2015)496–503
發表人 劉英麟
發表日期 2015/05/20
國家 國外
內容摘要 Chemical modification has been carried out on polybenzimidazole(PBI) membranes for pervaporation dehydration on tetrahydrofuran(THF)/watermixtures. The PBI membrane crosslinked with30wt% of a polybenzoxazine(CR-PBI-30) shows good stability and high separation performance for pervaporation dehydrationon the THF aqueous solutionsin a wide range of concentrations above 50wt%. Incorporation of poly(styrenesulfonicacid)(PSSA) chains to CR-PBI-30 membrane surface increases the surface hydro-philicity and water dissolution/absorption of the resulting membrane(CR-PBI-30-PSSA), so as to increase its water ermeability without sacrificing membrane selectivity. The CR-PBI-30-PSSA membrane shows extremely high separation factors(the water concentrations at the permeate side(Cw)>99.99wt%) and moderate permeation fluxes(about180gh 1 m 2) for pervaporation dehydration on the THF aqueous solutions in concentrations above 80wt%. The membrane also shows a Cw>97.5wt% and a water flux of 220gh 1 m 2 for a 70wt% THFaqueous solution.This work demonstrates an effective approach to prepare membranes for pervaporation dehydration on aqueous solutions of high polar solvents, especially for the feed solutions possessing high water contents.