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US 12,378,705 B2Granted
Electrically-conducting polymer yarn and method of making same
AssigneeUniversity of Kentucky Research Foundation
InventorsRuben Sarabia-Riquelme, Matthew C. Weisenberger
Life of this patent
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Abstract
A method for making electrically-conductive yarn includes simultaneously drawing and axially twisting a starting material selected from a group consisting of intrinsically electrically-conducting fiber nonwovens and multifilament tows of intrinsically electrically-conducting fiber. The resulting yarn is a compacted, intrinsically electrically-conducting fiber material having an axial twist of between about 0.5 and about 60 degrees.
Claims6
A method for making electrically-conductive yarn, comprising:
- extruding a dispersion of poly (3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) polymer in a polar solvent through a spinneret into a coagulation bath of non-solvent to the PEDOT:PSS to produce PEDOT:PSS fibers;
- allowing the PEDOT:PSS fibers to accumulate in the coagulation bath where the PEDOT:PSS fibers entangle forming a mesh;
- removing the mesh from the coagulation bath and placing it in a wash bath of a solvent having a relative polarity of less than 0.15;
- removing the mesh from the wash bath and allowing the mesh to dry;
- and
- simultaneously drawing and axially twisting the mesh to make the electrically-conductive yarn.
3 more elements
Dependencies are inferred from the claim text.