Method of enhancing conductivity of conductive polymer product
View Patent ↗A method of enhancing the conductivity of various conductive polymer products, such as a conductive polymer product obtained by polymerizing 3,4-ethylenedioxythiophene in an aqueous solution of polystyrenesulfonic acid. The method of enhancing the conductivity of a conductive polymer product includes placing a conductive polymer product, water, an organic solvent compatible with the conductive polymer product, and carbon dioxide gas in a pressure vessel; and applying heat and pressure to an interior of the pressure vessel to bring the carbon dioxide into a supercritical state.
1. A method of enhancing an electrical conductivity of an electrically conductive polymer product comprising: placing an electrically conductive polymer product, water, an organic solvent compatible with the electrically conductive polymer product, and carbon dioxide gas in a pressure vessel; and applying heat and pressure to an interior of the pressure vessel to bring the carbon dioxide into a supercritical state.
2. The method of enhancing a conductivity of a conductive polymer product according to claim 1 , wherein the conductive polymer product is a product obtained by polymerizing 3,4-ethylenedioxythiophene in an aqueous solution of polystyrenesulfonic acid and/or polyaniline.
3. The method of enhancing a conductivity of a conductive polymer product according to claim 1 , wherein the organic solvent is at least one selected from the group consisting of dimethyl sulfoxide, ethylene glycol, N-methylpyrrolidone and N,N-dimethylformamide.
4. The method of enhancing a conductivity of a conductive polymer product according to claim 1 , wherein the interior of the pressure vessel is pressurized to a pressure from 7 to 25 MPa and heated to a temperature from 85 to 110° C., and the pressure and the temperature are maintained for 0.5 to 4 hours.
5. The method of enhancing a conductivity of a conductive polymer product according to claim 2 , wherein the organic solvent is at least one selected from the group consisting of dimethyl sulfoxide, ethylene glycol, N-methylpyrrolidone and N,N-dimethylformamide.
6. The method of enhancing a conductivity of a conductive polymer product according to claim 2 , wherein the interior of the pressure vessel is pressurized to a pressure from 7 to 25 MPa and heated to a temperature from 85 to 110° C., and the pressure and the temperature are maintained for 0.5 to 4 hours.
7. The method of enhancing a conductivity of a conductive polymer product according to claim 3 , wherein the interior of the pressure vessel is pressurized to a pressure from 7 to 25 MPa and heated to a temperature from 85 to 110° C., and the pressure and the temperature are maintained for 0.5 to 4 hours.
8. The method of enhancing a conductivity of a conductive polymer product according to claim 5 , wherein the interior of the pressure vessel is pressurized to a pressure from 7 to 25 MPa and heated to a temperature from 85 to 110° C., and the pressure and the temperature are maintained for 0.5 to 4 hours.