▎ 摘　　要

NOVELTY - Process for reduction of component composed of at least one graphene oxide and a matrix of polymer, involves introducing a mixture comprising at least one polymer and graphene oxide into a reactor (10) and subjecting to a temperature value (T) and a pressure value (P) which is suitable for placing a fluid under supercritical or sub-critical conditions during a given duration, and cooling the reactor and removing the product obtained from reduced polymer(s) and graphene oxide. The temperature (T) is adapted not to degrade the polymer. USE - Process for reduction of component e.g. reduced graphene oxide-polyvinyl alcohol composite or reduced graphene oxide-polyethylene glycol composite (all claimed) used for producing product e.g. fibers, films, conductive inks, and electrodes. Uses include but are not limited to antistatic materials, electromagnetic dissipation material, organic electronics, flexible electronics, conductive inks, conductive fabrics and actuators, and for energy recovery applications. ADVANTAGE - The method enables environmentally-friendly and flexible reduction of component composed of graphene oxide and matrix of polymer. The product obtained using the method has improved electrical conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for device (1), which comprises a reactor comprising at least one inlet (12) for a fluid and an outlet (13), a heating zone (11), containers (29, 31) comprising fluids chosen for their ability to reach a critical point, a device for heating and pressurizing the reactor comprising the fluid and the component, and a sensor (40) designed for controlling pressure (P) and temperature (T) of the reactor. The fluids are introduced into the reactor by a conduit (22) opening into the reactor and a regulating valve (23). DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the device. Device (1) Reactor (10) Heating zone (11) Inlet (12) Outlet (13) Conduit (22) Regulating valve (23) Container (29,31)