【摘要】 采用浓硫酸(95%~98%)作为磺化剂,制备了具有不同磺化度(DS)的磺化聚醚醚酮(SPEEK)膜,用FT-IR和1H NMR对SPEEK的结构进行了表征,用1H NMR法对磺化度进行了测定,并对SPEEK膜的质子导电性能进行了研究。磺化度为0.78时,SPEEK膜的质子传导率在115℃时达到了5.8×10-2S/cm。温度对SPEEK膜的质子传导性能有着显著的影响,在25℃下,SPEEK膜的质子传导活化能都超过了25 kJ/mol。更多还原

【Abstract】 Sulfonated poly（ether ether ketone） （SPEEK） membranes with various degrees of sulfonation（DS） were prepared with H₂SO₄ （95%～98%） as sulfonating agent. The structure of the SPEEK was investigated by FT-IR and ¹ H NMR. The DS of the SPEEK was determined by using ¹ H NMR method and proton conductivity properties of the SPEEK membranes were studied.The proton conductivity of SPEEK membrane with 0.78 DS reached 5.8×10^-2 S/cm at 115 ℃.The conductivity of SPEEK membranes was influenced by temperature and the activation energies for SPEEK membranes exceeded 25 kJ/mol at 25 ℃.更多还原