Patent
US 10,549,998METHOD AND SYSTEM FOR PRODUCING POLYMER/REDUCED GRAPHENE OXIDE NANOCOMPOSITES BY IN SITU REDUCTION OF GRAPHENE OXIDE
Philippe POULIN
US
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Patent
Atlas literature
Patent
US 10,549,998Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for the reduction of at least one graphene oxide within a composite component comprising at least one polymer matrix, wherein it comprises at least the following stages: a composite composed of at least one polymer and of graphene oxide GO is introduced into a reactor subjected to a temperature T value and a pressure P value which are appropriate for placing a fluid under supercritical or subcritical conditions for a given period of time, the temperature T being appropriate for not decomposing the polymer; and the reactor is cooled and the product R obtained, composed of at least one polymer matrix and of reduced graphene oxide rGO, is withdrawn, wherein the temperature value is within the interval [100-1 80° C] and the chosen pressure value within the interval [20-25 MPa]. Previously presented
The method as claimed in claim 1, wherein carbon dioxide is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein a mixture of carbon dioxide and of hydrogen is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein nitrogen, taken alone or mixed, is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PVA composite. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PEG composite. Previously presented
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials2 process steps
A GO-PVA film is prepared by dispersing graphene oxide in water at 4 mg/ml, mixing with PVA polymer in aqueous solution at desired weight percentages (0.5 to 20 wt% GO relative to PVA), stirring homogeneously for at least 5 hours, pouring into a receptacle, and drying at 50°C for 48 hours. The GO-PVA film is then placed in a reactor into which a fluid is introduced that can be brought to a supercritical or subcritical state, and the reactor is subjected to appropriate pressure and temperature conditions to reduce the graphene oxide in situ without decomposing the polymer.
Materials described outside the worked examples.
carbon dioxide
CO₂
hydrogen
H₂
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
reduction temperature range | 100–180 °C | — |
reduction pressure range | 20–25 MPa | — |
CO2 critical temperature |
Patent
Atlas literature
Patent
US 10,549,998Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for the reduction of at least one graphene oxide within a composite component comprising at least one polymer matrix, wherein it comprises at least the following stages: a composite composed of at least one polymer and of graphene oxide GO is introduced into a reactor subjected to a temperature T value and a pressure P value which are appropriate for placing a fluid under supercritical or subcritical conditions for a given period of time, the temperature T being appropriate for not decomposing the polymer; and the reactor is cooled and the product R obtained, composed of at least one polymer matrix and of reduced graphene oxide rGO, is withdrawn, wherein the temperature value is within the interval [100-1 80° C] and the chosen pressure value within the interval [20-25 MPa]. Previously presented
The method as claimed in claim 1, wherein carbon dioxide is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein a mixture of carbon dioxide and of hydrogen is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein nitrogen, taken alone or mixed, is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PVA composite. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PEG composite. Previously presented
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials2 process steps
A GO-PVA film is prepared by dispersing graphene oxide in water at 4 mg/ml, mixing with PVA polymer in aqueous solution at desired weight percentages (0.5 to 20 wt% GO relative to PVA), stirring homogeneously for at least 5 hours, pouring into a receptacle, and drying at 50°C for 48 hours. The GO-PVA film is then placed in a reactor into which a fluid is introduced that can be brought to a supercritical or subcritical state, and the reactor is subjected to appropriate pressure and temperature conditions to reduce the graphene oxide in situ without decomposing the polymer.
Materials described outside the worked examples.
carbon dioxide
CO₂
hydrogen
H₂
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
reduction temperature range | 100–180 °C | — |
reduction pressure range | 20–25 MPa | — |
CO2 critical temperature |
Patent
Atlas literature
Patent
US 10,549,998Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for the reduction of at least one graphene oxide within a composite component comprising at least one polymer matrix, wherein it comprises at least the following stages: a composite composed of at least one polymer and of graphene oxide GO is introduced into a reactor subjected to a temperature T value and a pressure P value which are appropriate for placing a fluid under supercritical or subcritical conditions for a given period of time, the temperature T being appropriate for not decomposing the polymer; and the reactor is cooled and the product R obtained, composed of at least one polymer matrix and of reduced graphene oxide rGO, is withdrawn, wherein the temperature value is within the interval [100-1 80° C] and the chosen pressure value within the interval [20-25 MPa]. Previously presented
The method as claimed in claim 1, wherein carbon dioxide is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein a mixture of carbon dioxide and of hydrogen is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein nitrogen, taken alone or mixed, is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PVA composite. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PEG composite. Previously presented
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials2 process steps
A GO-PVA film is prepared by dispersing graphene oxide in water at 4 mg/ml, mixing with PVA polymer in aqueous solution at desired weight percentages (0.5 to 20 wt% GO relative to PVA), stirring homogeneously for at least 5 hours, pouring into a receptacle, and drying at 50°C for 48 hours. The GO-PVA film is then placed in a reactor into which a fluid is introduced that can be brought to a supercritical or subcritical state, and the reactor is subjected to appropriate pressure and temperature conditions to reduce the graphene oxide in situ without decomposing the polymer.
Materials described outside the worked examples.
carbon dioxide
CO₂
hydrogen
H₂
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
reduction temperature range | 100–180 °C | — |
reduction pressure range | 20–25 MPa | — |
CO2 critical temperature |
Patent
Atlas literature
Patent
US 10,549,998Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method for the reduction of at least one graphene oxide within a composite component comprising at least one polymer matrix, wherein it comprises at least the following stages: a composite composed of at least one polymer and of graphene oxide GO is introduced into a reactor subjected to a temperature T value and a pressure P value which are appropriate for placing a fluid under supercritical or subcritical conditions for a given period of time, the temperature T being appropriate for not decomposing the polymer; and the reactor is cooled and the product R obtained, composed of at least one polymer matrix and of reduced graphene oxide rGO, is withdrawn, wherein the temperature value is within the interval [100-1 80° C] and the chosen pressure value within the interval [20-25 MPa]. Previously presented
The method as claimed in claim 1, wherein carbon dioxide is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein a mixture of carbon dioxide and of hydrogen is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein nitrogen, taken alone or mixed, is used as supercritical fluid or as subcritical fluid. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PVA composite. Previously presented
The method as claimed in claim 1, wherein the component is a rGO-PEG composite. Previously presented
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
. Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials2 process steps
A GO-PVA film is prepared by dispersing graphene oxide in water at 4 mg/ml, mixing with PVA polymer in aqueous solution at desired weight percentages (0.5 to 20 wt% GO relative to PVA), stirring homogeneously for at least 5 hours, pouring into a receptacle, and drying at 50°C for 48 hours. The GO-PVA film is then placed in a reactor into which a fluid is introduced that can be brought to a supercritical or subcritical state, and the reactor is subjected to appropriate pressure and temperature conditions to reduce the graphene oxide in situ without decomposing the polymer.
Materials described outside the worked examples.
carbon dioxide
CO₂
hydrogen
H₂
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
reduction temperature range | 100–180 °C | — |
reduction pressure range | 20–25 MPa | — |
CO2 critical temperature |
nitrogen
N₂
polyethylene glycol
ammonia
NH₃
argon
Ar
| 31 °C |
CO₂ |
CO2 critical pressure | 7.38 MPa | CO₂ |
ammonia critical temperature | 133 °C | NH₃ |
ammonia critical pressure | 11.4 MPa | NH₃ |
Duration | 600–86400 s | — |
Duration | 1800–10800 s | — |
Pressure | 200–250 bar | — |
Duration | ≥ 5 hours | — |
nitrogen
N₂
polyethylene glycol
ammonia
NH₃
argon
Ar
| 31 °C |
CO₂ |
CO2 critical pressure | 7.38 MPa | CO₂ |
ammonia critical temperature | 133 °C | NH₃ |
ammonia critical pressure | 11.4 MPa | NH₃ |
Duration | 600–86400 s | — |
Duration | 1800–10800 s | — |
Pressure | 200–250 bar | — |
Duration | ≥ 5 hours | — |
nitrogen
N₂
polyethylene glycol
ammonia
NH₃
argon
Ar
| 31 °C |
CO₂ |
CO2 critical pressure | 7.38 MPa | CO₂ |
ammonia critical temperature | 133 °C | NH₃ |
ammonia critical pressure | 11.4 MPa | NH₃ |
Duration | 600–86400 s | — |
Duration | 1800–10800 s | — |
Pressure | 200–250 bar | — |
Duration | ≥ 5 hours | — |
nitrogen
N₂
polyethylene glycol
ammonia
NH₃
argon
Ar
| 31 °C |
CO₂ |
CO2 critical pressure | 7.38 MPa | CO₂ |
ammonia critical temperature | 133 °C | NH₃ |
ammonia critical pressure | 11.4 MPa | NH₃ |
Duration | 600–86400 s | — |
Duration | 1800–10800 s | — |
Pressure | 200–250 bar | — |
Duration | ≥ 5 hours | — |