Research On The Preparation Of Ionic Liquid And Ionic Liquid Polymer And Application Of P-polyaniline

With the development of ionic liquid and ionic liquid polymer theoretical research and application technology,more new types of ionic liquids and polymer ionic liquid materials with special functions are needed to meet various needs and enrich the basic chemistry theory of ionic liquids and ionic liquid polymers.In this paper,four imidazole ionic liquids with different functional groups and structures and one new polymer ionic liquid with imidazole as the backbone and ethyl acetate functional groups have been prepared.The main research content and related conclusions are as follows:(1)Combining research ideas,this article first adopted two-step method,using methyl imidazole as the cationic skeleton,by connecting four different structural functional group side groups,and finally using sodium fluoborate or concentrated sulfuric acid for ion exchange reaction,the design and synthesis of four Kinds of ionic liquids with different structures.Their structure was characterized by infrared spectroscopy and nuclear magnetic resonance technology.The results of the data showed that four ionic liquids containing pendant functional groups with different structures have been successfully prepared.(2)Different from the traditional synthetic idea of polyaniline,this article explored a method of using ionic liquid and polymer ionic liquid to have better uniform dispersion in aqueous solution than other surfactants,and to pass in the liquid state.The advantage of hydrogen bonding to form nanostructures(this nanostructure has a great regulatory effect on the preparation of polyaniline nanoparticles with various special morphologies)is a method to regulation and control the morphology and particle size of polyaniline.The effects of ionic liquids with different structural functional groups side groups on the morphology and electrochemical properties of polyaniline under the control of a single variable are studied.The morphology of the adjusted polyaniline was observed by SEM,and the results showed that:[EAMIM]BF₄ionic liquid has the best controllability for the morphology of polyaniline,and the PANI product obtained with[EAMIM]BF₄ionic liquid as the regulator is uniformly dispersed,Nanorods with uniform morphology,about 50nm in diameter and 100nm in length.Analysis of the reasons can be obtained:For[EAMIM]BF₄ionic liquid,compared with the other three ionic liquids,the lipophilicity of ethyl acetate is stronger than that of butyl,sulfonic acid and ethanol,which makes it stable on the surface of droplets.The adsorption force is stronger,it has a better stabilizing effect,is more conducive to the formation of the special morphology of polyaniline,and their morphology is strictly controllable and adjustable(3)Using one-step method,and using the idea of"polymerization first,exchange later",polyvinylimidazole was successfully prepared by using1-vinylimidazole as a raw material,and ethyl acetate functional groups were successfully introduced.The ionic liquid polymer was used as a soft template to regulation and control the morphology and particle size of polyaniline,and the influence of ionic liquid polymer of different concentrations on the morphology and particle size of polyaniline was investigated.The chemical structure of polyaniline was characterized by FT-IR,and the morphology of the adjusted polyaniline was observed by SEM.The results showed that when the ratio of PNVIMEC to polyaniline is 10:1,nano-microsphere particles with smaller particle size and abundant porous structure can be formed.When the ratio of PNVIMEC to polyaniline is 4:1,unconventional nano-microsphere particles with larger particle size can be formed.When the ratio of PNVIMEC to polyaniline is 2:1,nano-microsphere particles with smaller particle diameters and"flower clusters"with very regular shapes can be formed.When the ratio of PNVIMEC to polyaniline is 1:2,it will not form regular nanospheres.To sum up,when the content of PNVIMEC is low,it is possible to form nano-microsphere particles with unconventional morphology and smaller particle size,as well as abundant chain structure and porous structure.When the content of PNVIMEC is higher,it can form regular-shaped"flower clusters"and nano-microsphere particles with larger particle size.