Patent
US 10,626,231MICROWAVE IRRADIATED POLY(VINYL ALCOHOL) AND GRAPHENE NANOCOMPOSITE
Mamdouh Ahmad AL-HARTHI
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,626,231Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims 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 producing a PVA/graphene nanocomposite, comprising: dispersing poly(vinyl alcohol) (PVA) and graphene nanoplatelets in water to form a mixture, wherein the graphene nanoplatelets have a thickness of 40-110 nm and a length to thickness aspect ratio of 40:1-1,200:1, and wherein a mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 50:1-200:1; drying the mixture to produce a film; and exposing the film to a microwave radiation of 100-300 W for 3-20 minutes to form the PVA/graphene nanocomposite, wherein the PVA/graphene nanocomposite has a bilayer structure with a PVA enriched layer and a graphene enriched layer, wherein the PVA enriched la v er comprises 90-99.99 wt % PVA and 0.01-10 wt % graphene nanoplatelets, each relative to a total weight of the PVA enriched la v er, and wherein the graphene enriched la v er comprises 80-99.9 wt % graphene nanoplatelets and 0.1-20 wt % PVA, each relative to a total weight of the graphene enriched la y er. Currently amended
The method of claim 1, wherein the poly(vinyl alcohol) has a weight average molecular weight of 85-105 kDa. Original
The method of claim 1, wherein the PVA enriched layer has a thickness of 135-400 p m, and the graphene enriched layer has a thickness of 4-10 pm. Previously presented
The method of claim 1, further comprising degassing the mixture before the drying. Original
The method of claim 1, wherein the drying is at 20-27 0 C and 0.85-1. 10 atm for 3-7 days. Original
The method of claim 1, wherein the mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, and wherein the fi lm is exposed to the microwave radiation for 3-7 minutes. Original
The method of claim 1. w herein the PVA/graphene nanocomposite has an electrical conducti vity of 0.029-0.050 S/cm. Original
The method of claim 1. w herein the microwave radiation has a frequency in a range of 2200-270 0 MHz. Original
The method of claim 1, wherein the mass ratio of pol y (vin yl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, wherein the film is exposed to the micro wav e radiation for 12-20 minutes, and wherein the PVA/graphene film has an electromagnetic interference shielding effectiveness of 70-80 dB for an electromagnetic radiation in the range of 8-12 GHz. Original
The method of claim 1, wherein the exposing comprises alternating on and off cycles, wherein each on cycle is 10-20 seconds long, and each off cycle is 45-90 seconds long. Original
Claims 3-5. Canceled
Canceled
Claims 20-21. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
PVA/graphene nanocomposite bilayer film
Materials described outside the worked examples.
poly(vinyl alcohol)
graphene nanoplatelets
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Electromagnetic Interference Shielding Effectiveness | 30-50 dB | PVA/graphene nanocomposite |
Electromagnetic Interference Shielding Effectiveness | 70-80 dB |
Patent
Atlas literature
Patent
US 10,626,231Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims 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 producing a PVA/graphene nanocomposite, comprising: dispersing poly(vinyl alcohol) (PVA) and graphene nanoplatelets in water to form a mixture, wherein the graphene nanoplatelets have a thickness of 40-110 nm and a length to thickness aspect ratio of 40:1-1,200:1, and wherein a mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 50:1-200:1; drying the mixture to produce a film; and exposing the film to a microwave radiation of 100-300 W for 3-20 minutes to form the PVA/graphene nanocomposite, wherein the PVA/graphene nanocomposite has a bilayer structure with a PVA enriched layer and a graphene enriched layer, wherein the PVA enriched la v er comprises 90-99.99 wt % PVA and 0.01-10 wt % graphene nanoplatelets, each relative to a total weight of the PVA enriched la v er, and wherein the graphene enriched la v er comprises 80-99.9 wt % graphene nanoplatelets and 0.1-20 wt % PVA, each relative to a total weight of the graphene enriched la y er. Currently amended
The method of claim 1, wherein the poly(vinyl alcohol) has a weight average molecular weight of 85-105 kDa. Original
The method of claim 1, wherein the PVA enriched layer has a thickness of 135-400 p m, and the graphene enriched layer has a thickness of 4-10 pm. Previously presented
The method of claim 1, further comprising degassing the mixture before the drying. Original
The method of claim 1, wherein the drying is at 20-27 0 C and 0.85-1. 10 atm for 3-7 days. Original
The method of claim 1, wherein the mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, and wherein the fi lm is exposed to the microwave radiation for 3-7 minutes. Original
The method of claim 1. w herein the PVA/graphene nanocomposite has an electrical conducti vity of 0.029-0.050 S/cm. Original
The method of claim 1. w herein the microwave radiation has a frequency in a range of 2200-270 0 MHz. Original
The method of claim 1, wherein the mass ratio of pol y (vin yl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, wherein the film is exposed to the micro wav e radiation for 12-20 minutes, and wherein the PVA/graphene film has an electromagnetic interference shielding effectiveness of 70-80 dB for an electromagnetic radiation in the range of 8-12 GHz. Original
The method of claim 1, wherein the exposing comprises alternating on and off cycles, wherein each on cycle is 10-20 seconds long, and each off cycle is 45-90 seconds long. Original
Claims 3-5. Canceled
Canceled
Claims 20-21. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
PVA/graphene nanocomposite bilayer film
Materials described outside the worked examples.
poly(vinyl alcohol)
graphene nanoplatelets
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Electromagnetic Interference Shielding Effectiveness | 30-50 dB | PVA/graphene nanocomposite |
Electromagnetic Interference Shielding Effectiveness | 70-80 dB |
Patent
Atlas literature
Patent
US 10,626,231Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims 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 producing a PVA/graphene nanocomposite, comprising: dispersing poly(vinyl alcohol) (PVA) and graphene nanoplatelets in water to form a mixture, wherein the graphene nanoplatelets have a thickness of 40-110 nm and a length to thickness aspect ratio of 40:1-1,200:1, and wherein a mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 50:1-200:1; drying the mixture to produce a film; and exposing the film to a microwave radiation of 100-300 W for 3-20 minutes to form the PVA/graphene nanocomposite, wherein the PVA/graphene nanocomposite has a bilayer structure with a PVA enriched layer and a graphene enriched layer, wherein the PVA enriched la v er comprises 90-99.99 wt % PVA and 0.01-10 wt % graphene nanoplatelets, each relative to a total weight of the PVA enriched la v er, and wherein the graphene enriched la v er comprises 80-99.9 wt % graphene nanoplatelets and 0.1-20 wt % PVA, each relative to a total weight of the graphene enriched la y er. Currently amended
The method of claim 1, wherein the poly(vinyl alcohol) has a weight average molecular weight of 85-105 kDa. Original
The method of claim 1, wherein the PVA enriched layer has a thickness of 135-400 p m, and the graphene enriched layer has a thickness of 4-10 pm. Previously presented
The method of claim 1, further comprising degassing the mixture before the drying. Original
The method of claim 1, wherein the drying is at 20-27 0 C and 0.85-1. 10 atm for 3-7 days. Original
The method of claim 1, wherein the mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, and wherein the fi lm is exposed to the microwave radiation for 3-7 minutes. Original
The method of claim 1. w herein the PVA/graphene nanocomposite has an electrical conducti vity of 0.029-0.050 S/cm. Original
The method of claim 1. w herein the microwave radiation has a frequency in a range of 2200-270 0 MHz. Original
The method of claim 1, wherein the mass ratio of pol y (vin yl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, wherein the film is exposed to the micro wav e radiation for 12-20 minutes, and wherein the PVA/graphene film has an electromagnetic interference shielding effectiveness of 70-80 dB for an electromagnetic radiation in the range of 8-12 GHz. Original
The method of claim 1, wherein the exposing comprises alternating on and off cycles, wherein each on cycle is 10-20 seconds long, and each off cycle is 45-90 seconds long. Original
Claims 3-5. Canceled
Canceled
Claims 20-21. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
PVA/graphene nanocomposite bilayer film
Materials described outside the worked examples.
poly(vinyl alcohol)
graphene nanoplatelets
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Electromagnetic Interference Shielding Effectiveness | 30-50 dB | PVA/graphene nanocomposite |
Electromagnetic Interference Shielding Effectiveness | 70-80 dB |
Patent
Atlas literature
Patent
US 10,626,231Patent drawings and their descriptions. Click a drawing to enlarge it.
Claims 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 producing a PVA/graphene nanocomposite, comprising: dispersing poly(vinyl alcohol) (PVA) and graphene nanoplatelets in water to form a mixture, wherein the graphene nanoplatelets have a thickness of 40-110 nm and a length to thickness aspect ratio of 40:1-1,200:1, and wherein a mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 50:1-200:1; drying the mixture to produce a film; and exposing the film to a microwave radiation of 100-300 W for 3-20 minutes to form the PVA/graphene nanocomposite, wherein the PVA/graphene nanocomposite has a bilayer structure with a PVA enriched layer and a graphene enriched layer, wherein the PVA enriched la v er comprises 90-99.99 wt % PVA and 0.01-10 wt % graphene nanoplatelets, each relative to a total weight of the PVA enriched la v er, and wherein the graphene enriched la v er comprises 80-99.9 wt % graphene nanoplatelets and 0.1-20 wt % PVA, each relative to a total weight of the graphene enriched la y er. Currently amended
The method of claim 1, wherein the poly(vinyl alcohol) has a weight average molecular weight of 85-105 kDa. Original
The method of claim 1, wherein the PVA enriched layer has a thickness of 135-400 p m, and the graphene enriched layer has a thickness of 4-10 pm. Previously presented
The method of claim 1, further comprising degassing the mixture before the drying. Original
The method of claim 1, wherein the drying is at 20-27 0 C and 0.85-1. 10 atm for 3-7 days. Original
The method of claim 1, wherein the mass ratio of poly(vinyl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, and wherein the fi lm is exposed to the microwave radiation for 3-7 minutes. Original
The method of claim 1. w herein the PVA/graphene nanocomposite has an electrical conducti vity of 0.029-0.050 S/cm. Original
The method of claim 1. w herein the microwave radiation has a frequency in a range of 2200-270 0 MHz. Original
The method of claim 1, wherein the mass ratio of pol y (vin yl alcohol) to graphene nanoplatelets in the mixture is 80:1-110:1, wherein the film is exposed to the micro wav e radiation for 12-20 minutes, and wherein the PVA/graphene film has an electromagnetic interference shielding effectiveness of 70-80 dB for an electromagnetic radiation in the range of 8-12 GHz. Original
The method of claim 1, wherein the exposing comprises alternating on and off cycles, wherein each on cycle is 10-20 seconds long, and each off cycle is 45-90 seconds long. Original
Claims 3-5. Canceled
Canceled
Claims 20-21. Canceled
Canceled
Layer stacks claimed or described, ordered top of device to substrate.
PVA/graphene nanocomposite bilayer film
Materials described outside the worked examples.
poly(vinyl alcohol)
graphene nanoplatelets
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
Electromagnetic Interference Shielding Effectiveness | 30-50 dB | PVA/graphene nanocomposite |
Electromagnetic Interference Shielding Effectiveness | 70-80 dB |
PVA/graphene nanocomposite
Electrical Conductivity | 0.029-0.050 S/cm | PVA/graphene nanocomposite |
Percentage Crystallinity | 51-60 % | PVA/graphene nanocomposite |
Raman Id Ig Ratio | 0.45-0.65 | PVA/graphene nanocomposite |
Peak Crystallization Temperature | 202–206 °C | PVA/graphene nanocomposite |
Melting Point | 227–231 °C | PVA/graphene nanocomposite |
Graphene Nucleation Efficiency | 500-570 % | PVA/graphene nanocomposite |
Thickness | 50–100 nm | — |
Thickness | 100–3000 cm | — |
Thickness | 3200–3500 cm | — |
Thickness | 1487-1230 cm | — |
Thickness | 0.25–5 nm | — |
— | 100–300 W | — |
Duration | 3–20 minutes | — |
Thickness | 40–110 nm | — |
Pressure | 0.85–1.1 atm | — |
Duration | 3–7 minutes | — |
Duration | 12–20 minutes | — |
Duration | 10–20 seconds | — |
Duration | 45–90 seconds | — |
Thickness | 45–105 nm | — |
— | 150–250 W | — |
Temperature | 40–95 °C | — |
Temperature | 60–90 °C | — |
Thickness | 1–20 mm | — |
Thickness | 3–10 mm | — |
Thickness | 4–9 mm | — |
Pressure | 0.9–1.05 atm | — |
Duration | 3–12 hours | — |
— | 180-120 W | — |
Duration | 3.5–6 min | — |
Duration | 12–18 seconds | — |
Duration | 13–17 seconds | — |
Duration | 50–75 seconds | — |
Duration | 55–65 seconds | — |
Thickness | 0.3–2.5 nm | — |
Thickness | 0.5–2 nm | — |
Thickness | 1–1.5 nm | — |
— | 0.01–0.05 w | — |
— | 2–10 w | — |
Temperature | 202–206 °C | — |
Temperature | 203–205 °C | — |
Temperature | 203.5–204.5 °C | — |
Temperature | 220–227 °C | — |
Temperature | 221–226 °C | — |
Temperature | 222–225 °C | — |
Duration | 9–16 minutes | — |
Pressure | ≤ 0.85 atm | — |
Pressure | ≤ 0.5 atm | — |
Pressure | ≤ 0.1 atm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 0.25 nm | — |
Temperature | ≥ 27 °C | — |
Duration | ≥ 7 minutes | — |
PVA/graphene nanocomposite
Electrical Conductivity | 0.029-0.050 S/cm | PVA/graphene nanocomposite |
Percentage Crystallinity | 51-60 % | PVA/graphene nanocomposite |
Raman Id Ig Ratio | 0.45-0.65 | PVA/graphene nanocomposite |
Peak Crystallization Temperature | 202–206 °C | PVA/graphene nanocomposite |
Melting Point | 227–231 °C | PVA/graphene nanocomposite |
Graphene Nucleation Efficiency | 500-570 % | PVA/graphene nanocomposite |
Thickness | 50–100 nm | — |
Thickness | 100–3000 cm | — |
Thickness | 3200–3500 cm | — |
Thickness | 1487-1230 cm | — |
Thickness | 0.25–5 nm | — |
— | 100–300 W | — |
Duration | 3–20 minutes | — |
Thickness | 40–110 nm | — |
Pressure | 0.85–1.1 atm | — |
Duration | 3–7 minutes | — |
Duration | 12–20 minutes | — |
Duration | 10–20 seconds | — |
Duration | 45–90 seconds | — |
Thickness | 45–105 nm | — |
— | 150–250 W | — |
Temperature | 40–95 °C | — |
Temperature | 60–90 °C | — |
Thickness | 1–20 mm | — |
Thickness | 3–10 mm | — |
Thickness | 4–9 mm | — |
Pressure | 0.9–1.05 atm | — |
Duration | 3–12 hours | — |
— | 180-120 W | — |
Duration | 3.5–6 min | — |
Duration | 12–18 seconds | — |
Duration | 13–17 seconds | — |
Duration | 50–75 seconds | — |
Duration | 55–65 seconds | — |
Thickness | 0.3–2.5 nm | — |
Thickness | 0.5–2 nm | — |
Thickness | 1–1.5 nm | — |
— | 0.01–0.05 w | — |
— | 2–10 w | — |
Temperature | 202–206 °C | — |
Temperature | 203–205 °C | — |
Temperature | 203.5–204.5 °C | — |
Temperature | 220–227 °C | — |
Temperature | 221–226 °C | — |
Temperature | 222–225 °C | — |
Duration | 9–16 minutes | — |
Pressure | ≤ 0.85 atm | — |
Pressure | ≤ 0.5 atm | — |
Pressure | ≤ 0.1 atm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 0.25 nm | — |
Temperature | ≥ 27 °C | — |
Duration | ≥ 7 minutes | — |
PVA/graphene nanocomposite
Electrical Conductivity | 0.029-0.050 S/cm | PVA/graphene nanocomposite |
Percentage Crystallinity | 51-60 % | PVA/graphene nanocomposite |
Raman Id Ig Ratio | 0.45-0.65 | PVA/graphene nanocomposite |
Peak Crystallization Temperature | 202–206 °C | PVA/graphene nanocomposite |
Melting Point | 227–231 °C | PVA/graphene nanocomposite |
Graphene Nucleation Efficiency | 500-570 % | PVA/graphene nanocomposite |
Thickness | 50–100 nm | — |
Thickness | 100–3000 cm | — |
Thickness | 3200–3500 cm | — |
Thickness | 1487-1230 cm | — |
Thickness | 0.25–5 nm | — |
— | 100–300 W | — |
Duration | 3–20 minutes | — |
Thickness | 40–110 nm | — |
Pressure | 0.85–1.1 atm | — |
Duration | 3–7 minutes | — |
Duration | 12–20 minutes | — |
Duration | 10–20 seconds | — |
Duration | 45–90 seconds | — |
Thickness | 45–105 nm | — |
— | 150–250 W | — |
Temperature | 40–95 °C | — |
Temperature | 60–90 °C | — |
Thickness | 1–20 mm | — |
Thickness | 3–10 mm | — |
Thickness | 4–9 mm | — |
Pressure | 0.9–1.05 atm | — |
Duration | 3–12 hours | — |
— | 180-120 W | — |
Duration | 3.5–6 min | — |
Duration | 12–18 seconds | — |
Duration | 13–17 seconds | — |
Duration | 50–75 seconds | — |
Duration | 55–65 seconds | — |
Thickness | 0.3–2.5 nm | — |
Thickness | 0.5–2 nm | — |
Thickness | 1–1.5 nm | — |
— | 0.01–0.05 w | — |
— | 2–10 w | — |
Temperature | 202–206 °C | — |
Temperature | 203–205 °C | — |
Temperature | 203.5–204.5 °C | — |
Temperature | 220–227 °C | — |
Temperature | 221–226 °C | — |
Temperature | 222–225 °C | — |
Duration | 9–16 minutes | — |
Pressure | ≤ 0.85 atm | — |
Pressure | ≤ 0.5 atm | — |
Pressure | ≤ 0.1 atm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 0.25 nm | — |
Temperature | ≥ 27 °C | — |
Duration | ≥ 7 minutes | — |
PVA/graphene nanocomposite
Electrical Conductivity | 0.029-0.050 S/cm | PVA/graphene nanocomposite |
Percentage Crystallinity | 51-60 % | PVA/graphene nanocomposite |
Raman Id Ig Ratio | 0.45-0.65 | PVA/graphene nanocomposite |
Peak Crystallization Temperature | 202–206 °C | PVA/graphene nanocomposite |
Melting Point | 227–231 °C | PVA/graphene nanocomposite |
Graphene Nucleation Efficiency | 500-570 % | PVA/graphene nanocomposite |
Thickness | 50–100 nm | — |
Thickness | 100–3000 cm | — |
Thickness | 3200–3500 cm | — |
Thickness | 1487-1230 cm | — |
Thickness | 0.25–5 nm | — |
— | 100–300 W | — |
Duration | 3–20 minutes | — |
Thickness | 40–110 nm | — |
Pressure | 0.85–1.1 atm | — |
Duration | 3–7 minutes | — |
Duration | 12–20 minutes | — |
Duration | 10–20 seconds | — |
Duration | 45–90 seconds | — |
Thickness | 45–105 nm | — |
— | 150–250 W | — |
Temperature | 40–95 °C | — |
Temperature | 60–90 °C | — |
Thickness | 1–20 mm | — |
Thickness | 3–10 mm | — |
Thickness | 4–9 mm | — |
Pressure | 0.9–1.05 atm | — |
Duration | 3–12 hours | — |
— | 180-120 W | — |
Duration | 3.5–6 min | — |
Duration | 12–18 seconds | — |
Duration | 13–17 seconds | — |
Duration | 50–75 seconds | — |
Duration | 55–65 seconds | — |
Thickness | 0.3–2.5 nm | — |
Thickness | 0.5–2 nm | — |
Thickness | 1–1.5 nm | — |
— | 0.01–0.05 w | — |
— | 2–10 w | — |
Temperature | 202–206 °C | — |
Temperature | 203–205 °C | — |
Temperature | 203.5–204.5 °C | — |
Temperature | 220–227 °C | — |
Temperature | 221–226 °C | — |
Temperature | 222–225 °C | — |
Duration | 9–16 minutes | — |
Pressure | ≤ 0.85 atm | — |
Pressure | ≤ 0.5 atm | — |
Pressure | ≤ 0.1 atm | — |
Thickness | ≤ 1 nm | — |
Thickness | ≤ 0.25 nm | — |
Temperature | ≥ 27 °C | — |
Duration | ≥ 7 minutes | — |