Preparation Of Conductive Polymer Gel By Gel Template Method And Study On The Performance Of Electrochemical Sensors

Conductive polymers have attracted a lot of attention,due to their unique organic semiconductor properties.They have shown great application prospect in anticorrosion,electrocatalysis,energy storage and sensors.It is of great practical significance for the application of materials to apply nanotechnology to material preparation and optimizing material physics and chemical properties.Therefore,exploiting three-dimensional structural conductive polymer materials and controlling the structure and size of conductive polymer nanomaterials has become a research hotspot in the field of conductive polymers in recent years.The main contents of this paper include:The experimental conditions for the preparation of polypyrrole gel by gel template method were investigated.Two suitable gel template polymerization systems were screened to prepare a conductive polymer gel with one-dimensional fiber structure.Compared with the traditional gel template method conductive polymerization was prepared.The coordination polymer gel template plays a decisive role in the polymer gel construction while the template preparation is simple and easy to remove.Further,the effects of the two systems on the synthetic polypyrrole gel were explored.APS has a higher oxidation potential resulting in a higher degree of polymerization of polypyrrole and a higher strength of crosslinked network,therefore,the modulus of APS-PPy is much larger than that of FN-PPy and template gel.APS-PPy transfers from a gel state to a fluid state at 10% of strain while FN-PPy changes from a gel state to a fluid state at around 40% of that.The result is that iron ions in FN-PPy coordinate with polypyrrole to enhance gel toughness.Electrochemical energy storage test showed that the internal resistance of APS-PPy gel was low and the presence of iron ion doping impaired the conductivity of FN-PPy.Compared to APS-PPy,FN-PPy has a higher specific capacitance.Using two synthetic polypyrrole gels loaded with glucose oxidase.biosensing tests showed that both glucose oxidase electrodes have high sensitivity to glucose and the response time is about 0.3 s.Among them,the APS-PPy/glucose oxidase electrode has a wide linear range ranging from 0 to 3.8 m M.