Patent
US 10,547,032FILM COMPRISING GRAPHENE OXIDE AND CLAY, PREPARATION METHOD THEREFOR, AND USE THEREOF AS OXYGEN BARRIER FILM
Sang Bong Lee
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,547,032Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows images of PET films before and after coating with oxygen barrier films according to an exemplary embodiment of the present invention. From the left, …
FIG. 2 shows a graph illustrating the oxygen transmission rates (OTR) of the PET films before and after coating with oxygen barrier films according to an …
FIG. 3 shows SEM images of the cross sections of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 4 shows a graph illustrating the FT-IR spectra according to the pH or content of the components of the oxygen barrier films according to an exemplary …
FIG. 5 shows the Raman spectra of the oxygen barrier films according to an exemplary embodiment of the present invention.
FIG. 6 shows the X-ray diffraction (XRD) patterns of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 7 shows SEM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 8 shows AFM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 9 is a schematic diagram of the oxygen barrier films according to an exemplary embodiment of the present invention and the principle of blocking oxygen …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A film comprising graphene oxide (GO) and clay in a structure having an enhanced oxygen barrier function compared to a graphene oxide film or a clay film of the same thickness, wherein the film does not comprise a binder, wherein the film has a thickness of 10 nm to 500 nm, wherein the film is a multilayer film having alternated layer of graphene oxide lay ers and clay la y ers, and wherein the film has a layered structure, in which upper and lower adjacent graphene oxide single layers are staggered, wherein the clay is filled in gaps between the neighboring graphene oxide single layers in the outermost layer. Currently amended
The film of claim 1, wherein the graphene oxide is plate-shaped having an average diameter of 100 nm to 10 km. Original
The film of claim 1, wherein the clay is electrically-charged and water-dispersible. Original
The film of claim 1, wherein the clay is plate-shaped. Original
The film of claim 1, wherein the clay is cationic clay, selected from the group consisting of laponite (LN), montmorillonite (MMT), hectorite, saponite, beidellite, and nontronite; anionic clay of layered double hydroxide (LDH); or a mixture thereof. Original
The film of claim 1, wherein the film consists of graphene oxide and clay. Withdrawn
An electronic device comprising the film according to claim 1 as an oxygen barrier film. Withdrawn
A packaging material coated with the film according to claim 1 as an oxygen barrier film. Withdrawn
A method for preparing a multilayer film of claim 1 comprising graphene oxide and clay, the method comprising: a first step of preparing a graphene oxide dispersion; a second step of preparing a clay dispersion; a third step of forming a first thin film with one of the graphene oxide dispersion and the clay dispersion; and a fourth step of forming a second thin film on the first thin film with the other of the graphene oxide dispersion and the clay dispersion. Withdrawn
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Characterization methods for GO/clay films: FE-SEM at 1 kV (SU-8020, HITACHI), ion milling for cross-sectional pretreatment (IM4000, HITACHI, 4 V, ~415 pA, Ar flow 0.17 cc/min), OTR measurement over 50 cm2 at 23°C and 0% RH (OX-TRAN Model 702, MOCON, detection limit 0.01 cc/m2-atm-day), FT-IR (Varian 660-IR), Raman (SENTERRA, BRUKER), XRD (SmartLab, Rigaku, 40 kV, 30 mA, CuKα, λ=0.154 nm, 1°<2θ<70°), contact angle (Phoenix 300, Surface Electro Optics), AFM (NX10, Park Systems, 0.5 Hz scan rate, noncontact cantilever).
4 materials4 process steps
Preparation of PET films coated with GO/clay. GO dispersion (0.5 wt%) was ultrasonicated for 1 hour at 50% output (chip-type, HD2200, BANDELIN), then bar-coated (RDS #10) onto PET substrate to make GO-coated film. LN-coated film prepared by applicator-coating (200 µm) with LN aqueous solution (4 wt%). For GO/LN composite films, GO dispersion and LN aqueous solution (2 wt%) were mixed at GO:LN volume ratios of 1.9:0.1, 1.8:0.2, 1.7:0.3, 1.6:0.4, 1.5:0.5, then homogenized for 10 min (waterbath ultrasonic generator), and bar-coated (RDS #10). GO/MMT composite films prepared similarly with MMT replacing LN at same concentration and ratios. A multilayer (DL-GO/LN) film was prepared by first bar-coating GO dispersion (0.5 wt%, RDS #10) then applicator-coating LN aqueous solution (3 wt%, 200 µm applicator) on top.
Layer stacks claimed or described, ordered top of device to substrate.
GO/clay multilayer oxygen barrier film
Materials described outside the worked examples.
hectorite
saponite
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
OTR of TR55 PET film coated with pure GO | 7.7 cc/m2-atm-day | graphene oxide |
Table 1
The composition and pH of the solutions used are shown in Table 1 below.
p. 9
Table 2
2, and the results for montmorillonite are shown in Table 2, respectively.
p. 10
Patent
Atlas literature
Patent
US 10,547,032Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows images of PET films before and after coating with oxygen barrier films according to an exemplary embodiment of the present invention. From the left, …
FIG. 2 shows a graph illustrating the oxygen transmission rates (OTR) of the PET films before and after coating with oxygen barrier films according to an …
FIG. 3 shows SEM images of the cross sections of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 4 shows a graph illustrating the FT-IR spectra according to the pH or content of the components of the oxygen barrier films according to an exemplary …
FIG. 5 shows the Raman spectra of the oxygen barrier films according to an exemplary embodiment of the present invention.
FIG. 6 shows the X-ray diffraction (XRD) patterns of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 7 shows SEM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 8 shows AFM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 9 is a schematic diagram of the oxygen barrier films according to an exemplary embodiment of the present invention and the principle of blocking oxygen …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A film comprising graphene oxide (GO) and clay in a structure having an enhanced oxygen barrier function compared to a graphene oxide film or a clay film of the same thickness, wherein the film does not comprise a binder, wherein the film has a thickness of 10 nm to 500 nm, wherein the film is a multilayer film having alternated layer of graphene oxide lay ers and clay la y ers, and wherein the film has a layered structure, in which upper and lower adjacent graphene oxide single layers are staggered, wherein the clay is filled in gaps between the neighboring graphene oxide single layers in the outermost layer. Currently amended
The film of claim 1, wherein the graphene oxide is plate-shaped having an average diameter of 100 nm to 10 km. Original
The film of claim 1, wherein the clay is electrically-charged and water-dispersible. Original
The film of claim 1, wherein the clay is plate-shaped. Original
The film of claim 1, wherein the clay is cationic clay, selected from the group consisting of laponite (LN), montmorillonite (MMT), hectorite, saponite, beidellite, and nontronite; anionic clay of layered double hydroxide (LDH); or a mixture thereof. Original
The film of claim 1, wherein the film consists of graphene oxide and clay. Withdrawn
An electronic device comprising the film according to claim 1 as an oxygen barrier film. Withdrawn
A packaging material coated with the film according to claim 1 as an oxygen barrier film. Withdrawn
A method for preparing a multilayer film of claim 1 comprising graphene oxide and clay, the method comprising: a first step of preparing a graphene oxide dispersion; a second step of preparing a clay dispersion; a third step of forming a first thin film with one of the graphene oxide dispersion and the clay dispersion; and a fourth step of forming a second thin film on the first thin film with the other of the graphene oxide dispersion and the clay dispersion. Withdrawn
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Characterization methods for GO/clay films: FE-SEM at 1 kV (SU-8020, HITACHI), ion milling for cross-sectional pretreatment (IM4000, HITACHI, 4 V, ~415 pA, Ar flow 0.17 cc/min), OTR measurement over 50 cm2 at 23°C and 0% RH (OX-TRAN Model 702, MOCON, detection limit 0.01 cc/m2-atm-day), FT-IR (Varian 660-IR), Raman (SENTERRA, BRUKER), XRD (SmartLab, Rigaku, 40 kV, 30 mA, CuKα, λ=0.154 nm, 1°<2θ<70°), contact angle (Phoenix 300, Surface Electro Optics), AFM (NX10, Park Systems, 0.5 Hz scan rate, noncontact cantilever).
4 materials4 process steps
Preparation of PET films coated with GO/clay. GO dispersion (0.5 wt%) was ultrasonicated for 1 hour at 50% output (chip-type, HD2200, BANDELIN), then bar-coated (RDS #10) onto PET substrate to make GO-coated film. LN-coated film prepared by applicator-coating (200 µm) with LN aqueous solution (4 wt%). For GO/LN composite films, GO dispersion and LN aqueous solution (2 wt%) were mixed at GO:LN volume ratios of 1.9:0.1, 1.8:0.2, 1.7:0.3, 1.6:0.4, 1.5:0.5, then homogenized for 10 min (waterbath ultrasonic generator), and bar-coated (RDS #10). GO/MMT composite films prepared similarly with MMT replacing LN at same concentration and ratios. A multilayer (DL-GO/LN) film was prepared by first bar-coating GO dispersion (0.5 wt%, RDS #10) then applicator-coating LN aqueous solution (3 wt%, 200 µm applicator) on top.
Layer stacks claimed or described, ordered top of device to substrate.
GO/clay multilayer oxygen barrier film
Materials described outside the worked examples.
hectorite
saponite
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
OTR of TR55 PET film coated with pure GO | 7.7 cc/m2-atm-day | graphene oxide |
Table 1
The composition and pH of the solutions used are shown in Table 1 below.
p. 9
Table 2
2, and the results for montmorillonite are shown in Table 2, respectively.
p. 10
Patent
Atlas literature
Patent
US 10,547,032Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows images of PET films before and after coating with oxygen barrier films according to an exemplary embodiment of the present invention. From the left, …
FIG. 2 shows a graph illustrating the oxygen transmission rates (OTR) of the PET films before and after coating with oxygen barrier films according to an …
FIG. 3 shows SEM images of the cross sections of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 4 shows a graph illustrating the FT-IR spectra according to the pH or content of the components of the oxygen barrier films according to an exemplary …
FIG. 5 shows the Raman spectra of the oxygen barrier films according to an exemplary embodiment of the present invention.
FIG. 6 shows the X-ray diffraction (XRD) patterns of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 7 shows SEM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 8 shows AFM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 9 is a schematic diagram of the oxygen barrier films according to an exemplary embodiment of the present invention and the principle of blocking oxygen …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A film comprising graphene oxide (GO) and clay in a structure having an enhanced oxygen barrier function compared to a graphene oxide film or a clay film of the same thickness, wherein the film does not comprise a binder, wherein the film has a thickness of 10 nm to 500 nm, wherein the film is a multilayer film having alternated layer of graphene oxide lay ers and clay la y ers, and wherein the film has a layered structure, in which upper and lower adjacent graphene oxide single layers are staggered, wherein the clay is filled in gaps between the neighboring graphene oxide single layers in the outermost layer. Currently amended
The film of claim 1, wherein the graphene oxide is plate-shaped having an average diameter of 100 nm to 10 km. Original
The film of claim 1, wherein the clay is electrically-charged and water-dispersible. Original
The film of claim 1, wherein the clay is plate-shaped. Original
The film of claim 1, wherein the clay is cationic clay, selected from the group consisting of laponite (LN), montmorillonite (MMT), hectorite, saponite, beidellite, and nontronite; anionic clay of layered double hydroxide (LDH); or a mixture thereof. Original
The film of claim 1, wherein the film consists of graphene oxide and clay. Withdrawn
An electronic device comprising the film according to claim 1 as an oxygen barrier film. Withdrawn
A packaging material coated with the film according to claim 1 as an oxygen barrier film. Withdrawn
A method for preparing a multilayer film of claim 1 comprising graphene oxide and clay, the method comprising: a first step of preparing a graphene oxide dispersion; a second step of preparing a clay dispersion; a third step of forming a first thin film with one of the graphene oxide dispersion and the clay dispersion; and a fourth step of forming a second thin film on the first thin film with the other of the graphene oxide dispersion and the clay dispersion. Withdrawn
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Characterization methods for GO/clay films: FE-SEM at 1 kV (SU-8020, HITACHI), ion milling for cross-sectional pretreatment (IM4000, HITACHI, 4 V, ~415 pA, Ar flow 0.17 cc/min), OTR measurement over 50 cm2 at 23°C and 0% RH (OX-TRAN Model 702, MOCON, detection limit 0.01 cc/m2-atm-day), FT-IR (Varian 660-IR), Raman (SENTERRA, BRUKER), XRD (SmartLab, Rigaku, 40 kV, 30 mA, CuKα, λ=0.154 nm, 1°<2θ<70°), contact angle (Phoenix 300, Surface Electro Optics), AFM (NX10, Park Systems, 0.5 Hz scan rate, noncontact cantilever).
4 materials4 process steps
Preparation of PET films coated with GO/clay. GO dispersion (0.5 wt%) was ultrasonicated for 1 hour at 50% output (chip-type, HD2200, BANDELIN), then bar-coated (RDS #10) onto PET substrate to make GO-coated film. LN-coated film prepared by applicator-coating (200 µm) with LN aqueous solution (4 wt%). For GO/LN composite films, GO dispersion and LN aqueous solution (2 wt%) were mixed at GO:LN volume ratios of 1.9:0.1, 1.8:0.2, 1.7:0.3, 1.6:0.4, 1.5:0.5, then homogenized for 10 min (waterbath ultrasonic generator), and bar-coated (RDS #10). GO/MMT composite films prepared similarly with MMT replacing LN at same concentration and ratios. A multilayer (DL-GO/LN) film was prepared by first bar-coating GO dispersion (0.5 wt%, RDS #10) then applicator-coating LN aqueous solution (3 wt%, 200 µm applicator) on top.
Layer stacks claimed or described, ordered top of device to substrate.
GO/clay multilayer oxygen barrier film
Materials described outside the worked examples.
hectorite
saponite
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
OTR of TR55 PET film coated with pure GO | 7.7 cc/m2-atm-day | graphene oxide |
Table 1
The composition and pH of the solutions used are shown in Table 1 below.
p. 9
Table 2
2, and the results for montmorillonite are shown in Table 2, respectively.
p. 10
Patent
Atlas literature
Patent
US 10,547,032Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 shows images of PET films before and after coating with oxygen barrier films according to an exemplary embodiment of the present invention. From the left, …
FIG. 2 shows a graph illustrating the oxygen transmission rates (OTR) of the PET films before and after coating with oxygen barrier films according to an …
FIG. 3 shows SEM images of the cross sections of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 4 shows a graph illustrating the FT-IR spectra according to the pH or content of the components of the oxygen barrier films according to an exemplary …
FIG. 5 shows the Raman spectra of the oxygen barrier films according to an exemplary embodiment of the present invention.
FIG. 6 shows the X-ray diffraction (XRD) patterns of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present …
FIG. 7 shows SEM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 8 shows AFM images of the surfaces of the PET films coated with the oxygen barrier films according to an exemplary embodiment of the present invention. (A) …
FIG. 9 is a schematic diagram of the oxygen barrier films according to an exemplary embodiment of the present invention and the principle of blocking oxygen …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A film comprising graphene oxide (GO) and clay in a structure having an enhanced oxygen barrier function compared to a graphene oxide film or a clay film of the same thickness, wherein the film does not comprise a binder, wherein the film has a thickness of 10 nm to 500 nm, wherein the film is a multilayer film having alternated layer of graphene oxide lay ers and clay la y ers, and wherein the film has a layered structure, in which upper and lower adjacent graphene oxide single layers are staggered, wherein the clay is filled in gaps between the neighboring graphene oxide single layers in the outermost layer. Currently amended
The film of claim 1, wherein the graphene oxide is plate-shaped having an average diameter of 100 nm to 10 km. Original
The film of claim 1, wherein the clay is electrically-charged and water-dispersible. Original
The film of claim 1, wherein the clay is plate-shaped. Original
The film of claim 1, wherein the clay is cationic clay, selected from the group consisting of laponite (LN), montmorillonite (MMT), hectorite, saponite, beidellite, and nontronite; anionic clay of layered double hydroxide (LDH); or a mixture thereof. Original
The film of claim 1, wherein the film consists of graphene oxide and clay. Withdrawn
An electronic device comprising the film according to claim 1 as an oxygen barrier film. Withdrawn
A packaging material coated with the film according to claim 1 as an oxygen barrier film. Withdrawn
A method for preparing a multilayer film of claim 1 comprising graphene oxide and clay, the method comprising: a first step of preparing a graphene oxide dispersion; a second step of preparing a clay dispersion; a third step of forming a first thin film with one of the graphene oxide dispersion and the clay dispersion; and a fourth step of forming a second thin film on the first thin film with the other of the graphene oxide dispersion and the clay dispersion. Withdrawn
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Canceled
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Characterization methods for GO/clay films: FE-SEM at 1 kV (SU-8020, HITACHI), ion milling for cross-sectional pretreatment (IM4000, HITACHI, 4 V, ~415 pA, Ar flow 0.17 cc/min), OTR measurement over 50 cm2 at 23°C and 0% RH (OX-TRAN Model 702, MOCON, detection limit 0.01 cc/m2-atm-day), FT-IR (Varian 660-IR), Raman (SENTERRA, BRUKER), XRD (SmartLab, Rigaku, 40 kV, 30 mA, CuKα, λ=0.154 nm, 1°<2θ<70°), contact angle (Phoenix 300, Surface Electro Optics), AFM (NX10, Park Systems, 0.5 Hz scan rate, noncontact cantilever).
4 materials4 process steps
Preparation of PET films coated with GO/clay. GO dispersion (0.5 wt%) was ultrasonicated for 1 hour at 50% output (chip-type, HD2200, BANDELIN), then bar-coated (RDS #10) onto PET substrate to make GO-coated film. LN-coated film prepared by applicator-coating (200 µm) with LN aqueous solution (4 wt%). For GO/LN composite films, GO dispersion and LN aqueous solution (2 wt%) were mixed at GO:LN volume ratios of 1.9:0.1, 1.8:0.2, 1.7:0.3, 1.6:0.4, 1.5:0.5, then homogenized for 10 min (waterbath ultrasonic generator), and bar-coated (RDS #10). GO/MMT composite films prepared similarly with MMT replacing LN at same concentration and ratios. A multilayer (DL-GO/LN) film was prepared by first bar-coating GO dispersion (0.5 wt%, RDS #10) then applicator-coating LN aqueous solution (3 wt%, 200 µm applicator) on top.
Layer stacks claimed or described, ordered top of device to substrate.
GO/clay multilayer oxygen barrier film
Materials described outside the worked examples.
hectorite
saponite
Measurements and analyses referenced in the patent, with their drawing references.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
OTR of TR55 PET film coated with pure GO | 7.7 cc/m2-atm-day | graphene oxide |
Table 1
The composition and pH of the solutions used are shown in Table 1 below.
p. 9
Table 2
2, and the results for montmorillonite are shown in Table 2, respectively.
p. 10
beidellite
nontronite
layered double hydroxide (LDH)
contact angle of TR55 PET film | 75 degrees | PET film substrate |
contact angle of SG05 PET film | 67 degrees | PET film substrate |
Thickness | 1–1385 cm | — |
Thickness | 1–1712 cm | — |
Thickness | 10–500 nm | — |
beidellite
nontronite
layered double hydroxide (LDH)
contact angle of TR55 PET film | 75 degrees | PET film substrate |
contact angle of SG05 PET film | 67 degrees | PET film substrate |
Thickness | 1–1385 cm | — |
Thickness | 1–1712 cm | — |
Thickness | 10–500 nm | — |
beidellite
nontronite
layered double hydroxide (LDH)
contact angle of TR55 PET film | 75 degrees | PET film substrate |
contact angle of SG05 PET film | 67 degrees | PET film substrate |
Thickness | 1–1385 cm | — |
Thickness | 1–1712 cm | — |
Thickness | 10–500 nm | — |
beidellite
nontronite
layered double hydroxide (LDH)
contact angle of TR55 PET film | 75 degrees | PET film substrate |
contact angle of SG05 PET film | 67 degrees | PET film substrate |
Thickness | 1–1385 cm | — |
Thickness | 1–1712 cm | — |
Thickness | 10–500 nm | — |