Studies On Synthesis Of Functional Ionic Liquids And Their Applications In Electrolytes

Functional ionic liquids was a special kind of liquid melting salt, had possessed some special physicochemical qualities, modified, recycled and it was deem to replace the traditional molecular solvents as"novel green solvents"and"designer solvents",and meet the specificity by designing. As the results, It was widely used on solid polymer electrolytes.In this paper, on the basic of summarizing about ionic liquids &their application on electrolytes. a series of the functionalized ionic liquids of imidazolium were synthesized, such as[eeim]X(Cl^-,BF₄^-,CH₃COO^-,PF₆^-). [hhim]X(Cl,BF₄^-,CH₃COO^-,PF₆^-). They were characterized by FT-IR and 1H-NMR spectra, The experience showed that the goal was the product of a successful synthesis. Their viscosities, electrochemical windows, electrical conductivities, solubility properties were investigated, the viscosities were higher than traddtional ionic liquids'. The electrochemical windows and electrical conductivities were lower, The mainly results were the symmetrical structure of the ionic liquids.and including functional parts.Secondly, a series two central functional ionic liquids with carboxyl were synthesized, then, reacted with chitosan to be chitosan-[CCim]X(X=Cl^-,CH₃COO^-,BF₄^-,I^-). Meanwhile, were characterized by FT-IR. Set out their TG, the results of which were chitosan-[CCim]X(X=Cl^-,CH₃COO^-,BF₄^-,I^-)'s heatly stability were lower than chitosan. As we consider, the results were the glass temperature Tg of chitosan-[CCim]X(X=Cl^-,CH₃COO^-,BF₄^-,I^-) were lower than chitosan's. then made the membranes chitosan-[CCim]I/I2 by chitosan-[CCim]I and I2, set out their conductives. The experience show that, when the mole ratio of [CCim]I /I₂ was 10:1 ,the conductive was the highest , 0.91×10^-2Scm^-1.The last, The PET-[eeim]Cl were sythesised by copolymering with dimethyl terephthalate,glycol and [eeim]Cl. Throuh the orthogonality method,We had searched the suitly activator, SnCl₂2H₂O, The experiencal temperature was about 170-190℃, The main concern was to search bulk resistance,hydrophilic, anti-bacterial. The experience show that the bulk resistance of PET-[eeim]Cl were lower than that of PET, the hydrophilic anti-bacterial were better than PET's, However, the heat stablety of PET-[eeim]Cl were lower than that of PET.