Patent ID: 6936653

Claim:
A composite comprising single-Well carbon nanotubes, at least one polar polymer selected from the group consisting of polycarbonate, poly(acrylic acid), poly(methacrylic acid), polyoxide, polysulfide, polywulfone, polyamide, polyester, polyurethane, polyimide, poly(vinyl acetate), poly(vinyl alcohol), poly(vinyl chloride), poly(vinyl pyridine), poly(vinyl pyrrolidone), copolymers thereof, and combinations thereof, and at least one nonpolar polymer, wherein the single-wall carbon nanotubes are present in the composite in an amount in the range of about 0.01 wt % and 20 wt % of the composite, wherein the composite has an electrical conductivity and wherein the single-wall carbon nanotubes are presented om a weight fraction F, and wherein the electrical conductivity of the composite is: i) at least 5 Siemens per centimeter (S/cm) when F≧0.5, ii) at least 1 S/cm when 0.5>F≧0.1, iii) at least 1×10 −4 S/cm when 0.1>F≧0.004 iv) at least 6×10 −9 S/cm when 0.004>F≧0.001, and v) at least 3×10 −16 S/cm when 0.001>F≧0.0001.