In this work,poly(ether ether ketone)(PEEK)was synthesized by direct polycondensation reaction.Subsequently,PEEK was functionalized by 1-vinylimidazole to prepare the polymer matrix(Im-PEEK).Cationic UiO-66-NH_(2) met...In this work,poly(ether ether ketone)(PEEK)was synthesized by direct polycondensation reaction.Subsequently,PEEK was functionalized by 1-vinylimidazole to prepare the polymer matrix(Im-PEEK).Cationic UiO-66-NH_(2) metal-organic frameworks(C-MOF)were synthesized as fillers.The structure of the C-MOF and the morphology of the membranes were verified by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and field emission scanning electron microscopy(FE-SEM).The prepared hybrid membranes exhibited excellent alkali stability,among which Im-PEEK/C-MOF^(-1)%could retain 89.2%of the conductivity compared to the original membrane after immersing in 1 mol L^(-1) NaOH solution for 320 h at 60℃.In addition,the ionic conductivity of Im-PEEK/C-MOF^(-1)%was 73 mS cm^(-1) at 80℃,which was higher than that of pure Im-PEEK under the same condition(44.3 mS cm^(-1) at 80℃).The results showed that the hybrid membranes have great potential for application in the field of anion exchange membranes.展开更多
基金the financial support from the National Natural Science Foundation of China(Grant No.51803011)the Education Department of Jilin Province,China(Grant No.JJKH20200666KJ).
文摘In this work,poly(ether ether ketone)(PEEK)was synthesized by direct polycondensation reaction.Subsequently,PEEK was functionalized by 1-vinylimidazole to prepare the polymer matrix(Im-PEEK).Cationic UiO-66-NH_(2) metal-organic frameworks(C-MOF)were synthesized as fillers.The structure of the C-MOF and the morphology of the membranes were verified by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and field emission scanning electron microscopy(FE-SEM).The prepared hybrid membranes exhibited excellent alkali stability,among which Im-PEEK/C-MOF^(-1)%could retain 89.2%of the conductivity compared to the original membrane after immersing in 1 mol L^(-1) NaOH solution for 320 h at 60℃.In addition,the ionic conductivity of Im-PEEK/C-MOF^(-1)%was 73 mS cm^(-1) at 80℃,which was higher than that of pure Im-PEEK under the same condition(44.3 mS cm^(-1) at 80℃).The results showed that the hybrid membranes have great potential for application in the field of anion exchange membranes.
