Highly conductive polymer blends with intrinsically conductive p

Details Highly conductive polymer blends with intrinsically conductive p Highly conductive polymer blends with intrinsically conductive p

1994-07-21

1997-01-21

Lieberman, Paul

Compositions

Electrically conductive or emissive compositions

524104, 524109, 528427, H01B 100, H01B 112

Patent

active

055956890

ABSTRACT:
A polymer blend according to the invention of the type including an intrinsically conductive polymer disbursed in a matrix selected from thermoplastic polymers, monomers, polymerizable precursors and combinations thereof is improved by an amount of a non-polymeric polar additive having a boiling point greater than about 100.degree. C. at 760 mm pressure and greater than the processing temperature of the matrix polymer incorporated in the polymer blend, in an amount sufficient to impart an electrical conductivity to the blend which is greater than that of the blend without the non-polymeric polar additive. A blend according to the invention includes a matrix material selected from thermoplastic polymers, monomers and polymer precursors and combinations thereof, and an intrinsically conductive polymer and a non-polymeric highly polar additive, disbursed into a polymer blend and having a conductivity of greater than about 2.5 S/cm. A composition according to the invention includes a precursor selected from polymers and polymerizable monomers, an intrinsically conductive polymer with a conductivity of about 1 to 5 S/cm and a non-polymeric polar additive having a conductivity of greater than that of the blend resulting in a blend having a conductivity greater than about 2 to 5 s/cm. A blend having thermo and conductive stability includes an intrinsically conductive polymer, an insulating thermoplastic polymer, an insulating thermoplastic polymer and an ester-free plasticizer which is thermally stable to at least about 240.degree. C., the blend having a conductivity of greater than 10.sup.-2 S/cm. A method for preparing such compositions and blends is also provided.

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