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Polyaniline as a conductive material of the future, and has broad application prospects. However, prepared in the present method the polyaniline has two drawbacks, the first, low conductivity; Second, the high conductivity of the polyaniline materials, due to the influence of various factors in the synthesis, is difficult to stabilize, serials to obtain a high electrical conductivity, polyaniline material or between different laboratories can not be copied. Polyaniline prepared under generally low conductivity, affect the promotion and use of polyaniline. This article is based on the above reasons, and hope to be able to identify the key factors and reasons, and provide new ideas for the preparation of the high conductivity of polyaniline. In this paper, polyaniline as the research object to study the impact on the the polyaniline structure and performance of sulfuric acid doped. Through theoretical analysis and study the impact of environmental factors on the performance of polyaniline, a useful exploration to lay the foundation for future work to improve the conductivity of polyaniline. Synthesis of polyaniline should be divided into two parts, the first aniline oxidative polymerization. Second, polyaniline polymerized into a chain. However, due to the limitation of the method itself, the two processes above were mixed together, mutual influence, caused by the conductivity of polyaniline is low. The reason may be aniline oxidation polymerization, polyaniline and mainly to the oxidized or reduced state. Aniline oxidative polymerization, polyaniline are mainly intermediate state, but polyaniline connected to the head or tail tail polymerization. Oxidative polymerization of aniline with electromotive force electromotive force size and changes directly affect the morphology of polyaniline generated (oxidation state, the intermediate state, reduced state), thereby affecting the electrical conductivity of polyaniline. Polyaniline chain is polymerized into a physical process, because polyaniline itself structural reasons, the charge on polyaniline unevenly distributed, resulting in polyaniline polymerized into the chain, environmental slight variation, so that the polyaniline head or tail tail connected. Through research, the following conclusions. (1) through orthogonal experiment to determine the best ratio, the relationship between the contrast conductivity of polyaniline and environmental factors to determine the key factors that affect the conductivity of polyaniline. (2) the establishment of the the aniline polymerization of electromotive force equation, the law of environmental factors on the conductivity of polyaniline is more intuitive, thus deriving, of polyaniline catalytic acid ionization. (3) separates the concept of aniline oxidation polymerization and polyaniline polymerized into the difference between in the chain, and results showed that aniline oxidation polymerization is a chemical process, polyaniline polymerized into a chain is a physical process, and on this basis, the proposed stabilizer . (4) through theoretical study, with ascorbic acid as a stabilizer, comparison of the sulfuric acid doped and sulfuric acid plus ascorbate doping difference between the two materials. (5) comparing the difference of organic acid and an inorganic acid doped polyaniline material properties. (6) The theoretical analysis shows that the organic and inorganic acids doped polyaniline conductivity contribution. (7) to the polyaniline as the raw material, pressed into the electrode material, and conducted a series of experiments with electricity and electrochemical experiments. The results showed that, the polyaniline electrode material has better electrocatalytic activity, is expected to become a new type of electrode material. Polyaniline more and more attention as a conductive polymer, polyaniline has the advantage of readily available raw materials, the synthesis method is simple, good stability to oxygen and water, unique antifouling excellent corrosion resistance, electrical conductivity, and therefore have a wide range of applications prospects and purposes.
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