Method of making a polymer film having a conductivity gradient a

Details Method of making a polymer film having a conductivity gradient a Method of making a polymer film having a conductivity gradient a

1993-03-08

1996-04-02

Walsh, Donald P.

Plastic and nonmetallic article shaping or treating: processes

Forming electrical articles by shaping electroconductive...

264105, 264204, 252500, H01B 120

Patent

active

H00015237

ABSTRACT:
A polymer film having a conductivity gradient across its thickness is made rom a mixed solution of an insulating polymer, A and a polymer, B that can be made conducting by doping or protonation by a method including the steps of:
(A) mixing the solution of the insulating polymer, A and the polymer, B that can be made conducting by doping or protonation,
(B) casting the mixed solution together as a solid composite film, and
(C) exposing the film to a treating agent that can dope or protonate polymer B and make polymer B conductive and create a conductivity gradient across the thickness of the polymer films.

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