Method for preparing acid doping conducting polyaniline material

Abstract

The invention relates to a method for preparing an acid-doped conductive polyaniline material. The polymerization of aniline is triggered by an initiator under the aminosulfonic acid system and the aniline synthesizes the aminosulfonic acid-doped polyaniline. The aminosulfonic acid is an amphiphilic surfactant, the stability is very high, the volatilization is difficult, the prepared aminosulfonic acid-doped conductive polyaniline has good electrochemical property and chemical stability, and the resistance of the product can be controlled.

Description

technical field [0001] The invention relates to a preparation method of a conductive polyaniline material. Background technique [0002] Polyaniline (PANI) has high electrical conductivity, good electrochemical and optical properties, and good environmental stability. It is a conductive polymer material with excellent comprehensive properties. The conductivity of polyaniline in the intrinsic state is actually very low, but after doping with protonic acid, its conductivity can be increased by 12 orders of magnitude. Commonly used protonic acids include HCl and dodecylbenzenesulfonic acid (DBSA). Although HCl-doped polyaniline has high electrical conductivity, because HCl is easy to volatilize, the environment of the obtained doped polyaniline is stable. However, although DBSA-doped polyaniline has good environmental stability, its electrical conductivity is much lower than that of HCl-doped polyaniline. [0003] Zheng Yudong et al.’s patent “Preparation Method of Soluble Hi...

AI Technical Summary

Problems solved by technology

Commonly used protonic acids include HCl and dodecylbenzenesulfonic acid (DBSA). Although HCl-doped polyaniline has high electrical conductivity, because HCl is easy to volatilize, the environment of the obtained doped polyaniline is stable. Poor performance, not suitable for storage; and DBSA-doped polyaniline, although it has good environmental stability, its electrical conductivity is much lower than that of HCl-doped polyaniline

[0003] Zheng Yudong et al.’s patent “Preparation Method of Soluble High Concentration Polyaniline Solution” (Application No. 98109188) used DBSA as an acid system for doping to prepare conductive polyaniline. Although the solubility is very good, the conductivity of conductive polyaniline is relatively low. Lower; the patent "preparation of ultra-low molecular weight polyaniline" (application number 97101355) of Sun Zaicheng etc. has used HCl to carry out doping, and the conductive polyaniline conductivity that obtains reaches 10S / cm, but stability is relatively poor; In the patent "a dopant and its preparation method and application" (Patent No. 00124728), a new aminobenzenesulfonic acid is used to dope polyaniline, but it needs to be acidified with concentrated hydrochloric acid, and the conductivity for 10 -6 ~1S / cm, relatively low