A method of preparing the PEDOT/PSS aqueous dispersions of nano-scale

A method of preparing the PEDOT/PSS aqueous dispersions of nano-scale, step includes: (1) by anionic surfactant, 3, the poly- 4- styrene sulfonic acid that 4- ethylenedioxy thiophene and weight average molecular weight are 20000~70000 is dispersed in water, defoaming agent is added, temperature is controlled at 20~50 DEG C, passes through stirring or high-pressure homogeneous formation micro emulsion；(2) microemulsion that step (1) obtains is cooled to 20~25 DEG C, the aqueous solution of ammonium persulfate and iron chloride is added dropwise into microemulsion；(3) solution obtained through step (2) is cleaned, is high-pressure homogeneous, dimethyl sulfoxide DMSO is added to get PEDOT/PSS aqueous dispersions are arrived.Present invention process is simple, and gained PEDOT/PSS partial size is small, stability is high, good conductivity.