Method for producing conductive fiber

Abstract

Provided is a method for producing a conductive fiber including a synthetic fiber and a conductive film that is formed on a surface of the synthetic fiber and includes single-wall carbon nanotubes, the method including: a conductive ink immersion step of immersing the synthetic fiber in a conductive ink having the single-wall carbon nanotubes dispersed in an aprotic solvent and causing the conductive ink to adhere to the synthetic fiber; and a solvent removal step that is performed after the conductive ink immersion step for drying the synthetic fiber to which the conductive ink adheres and removing the aprotic solvent.

1 . A method for producing a conductive fiber including a synthetic fiber and a conductive film that is formed on a surface of the synthetic fiber and includes single-wall carbon nanotubes, the method comprising:
 a conductive ink immersion step of immersing the synthetic fiber in a conductive ink having the single-wall carbon nanotubes dispersed in an aprotic solvent and causing the conductive ink to adhere to the synthetic fiber; and   a solvent removal step that is performed after the conductive ink immersion step for drying the synthetic fiber to which the conductive ink adheres and removing the aprotic solvent.   
     
     
         2 . The method for producing a conductive fiber according to  claim 1 , wherein
 the synthetic fiber is a polyester fiber.   
     
     
         3 . The method for producing a conductive fiber according to  claim 1 , wherein
 the aprotic solvent is N,N-dimethylformamide.   
     
     
         4 . The method for producing a conductive fiber according to  claim 1 , further comprising:
 a pretreatment step of immersing the synthetic fiber in polydopamine performed before the conductive ink immersion step.   
     
     
         5 . The method for producing a conductive fiber according to  claim 1 , wherein
 a temperature in the solvent removal step is equal to or lower than a glass transition temperature of the synthetic fiber.   
     
     
         6 . The method for producing a conductive fiber according to  claim 5 , wherein
 a vacuum drying method is used in the solvent removal step.   
     
     
         7 . The method for producing a conductive fiber according to  claim 1 , wherein
 a ball mill is used in the conductive ink immersion step.   
     
     
         8 . The method for producing a conductive fiber according to  claim 1 , wherein
 the conductive ink does not contain a surfactant.