Electrochemical synthesis and processing of conducting polymers in supercritical media
AssigneeNortheastern University
InventorPatricia Ann Mabrouk
Life of this patent
Estimating the term…
Abstract
The present invention deals with the electrochemical synthesis of electrically conductive polymers in supercritical fluids, for example supercritical CO2. The use of the supercritical fluid as a solvent results in the reduction or elimination of hazardous reagents and environmentally hazardous waste, which was generated in the prior chemical synthesis techniques. The electrochemical approach eliminates the need to add a charge transfer agent as the electrode serves this purpose. The resulting polymers are characterized by high conductivities and distinctive surface morphology, which suggests that they may be more appropriate than the previous materials for certain applications (e.g., corrosion inhibition, optical applications, etc.).
Claims10
A process for synthesizing a conducting polymer, said process comprising:
- a. delivering into an electrochemical cell suitable for use with supercritical fluids
- 1. the monomer used to prepare said polymer,
- 2. electrolyte and
- 3. a supercritical fluid medium,
- b. adjusting temperature and pressure to near-critical or supercritical conditions, and
- c. oxidizing and polymerizing the contents of said cell electrochemically.
A process for synthesizing a conducting polymer in supercritical carbon dioxide, said process comprising:
- a. delivering into an electrochemical cell suitable for use with supercritical fluids
- 1. the monomer used to prepare said polymer,
- 2. electrolyte and
- 3. supercritical carbon dioxide,
- b. increasing temperature and pressure to near-critical or supercritical conditions for carbon dioxide, and
- c. oxidizing and polymerizing the contents of said cell electrochemically by cycling applied potential between oxidizing and reducing potential limits for said monomer.
Dependencies are inferred from the claim text.