A kind of synthetic method of conductive polyaniline

Abstract

The invention belongs to the field of conductive polyaniline synthesis, in particular to a synthetic method of conductive polyaniline. The method comprises the following steps that 1, an aniline mixed solution is prepared, aniline is dropwise added in alcohol easy to be dissolved in water or a polymer solution and stirred continuously, and dropwise adding is stopped till turbidity occurs in the solution; 2, synthesis of polyaniline is conducted, phosphotungstic acid is added in the mixed solution in the first step, stirring is conducted simultaneously, the mass of the phosphotungstic acid is 80% to 110% of that of added aniline, and after stirring is completed, standing reaction is conducted for more than 10 h, wherein floccule exists in the solution; 3, centrifugalization is conducted, filtration is conducted on the solution which is subjected to the standing reaction in the second step through a centrifugal filter; 4, washing and drying are conducted, after a filter cake in the third step is collected, washing is conducted through an ethanol solution and distilled water in sequence, vacuum drying is conducted on the cleaned filter cake, and deep green powder is obtained. According to the synthetic method of the conductive polyaniline, the electrical conductivity of the produced polyaniline ranges from 0.5 S / cm to 2.1 S / cm, and the better electroconductibility is achieved; by means of the synthetic method of the conductive polyaniline, additional power consumption is not needed, product separation is simple, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the field of synthesis of conductive polyaniline, in particular to a synthesis method of conductive polyaniline. Background technique [0002] The structure and physical and chemical properties of polyaniline strongly depend on the synthesis method and conditions. Intrinsic state polyaniline is not conductive, and it needs to be oxidized or doped to make it conductive. A series of new synthesis and doping methods, such as electrochemical polymerization and chemical doping under magnetic field, emulsion extraction polymerization, and in situ doping polymerization, etc., have been used to prepare conductive polyanilines with novel physicochemical properties. Existing synthetic methods have their own defects, such as emulsion polymerization, product separation and precipitation process is complicated, need to add demulsifier or coagulant, there are many kinds of auxiliary agents, large dosage, many residual impurities in the produ...

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Problems solved by technology

Existing synthetic methods have their own defects, such as emulsion polymerization, the product separation and precipitation process is complicated, need to add demulsifier or coagulant, there are many kinds of additives, large dosage, there are many residual impurities in the product, and the washing water consumption is large and it is not easy to Cleaning, etc.; such as electrochemical synthesis methods, which are prone to current or voltage instability during production, resulting in major changes in product performance, and large energy consumption in production, which is not environmentally friendly