Composition and method of making nanocomposite containing graphene sheets
AssigneeAlfaisal University
InventorsEdreese H Alsharaeh, Mohammad AlDosari, Ali Abdel-Rahman Mohammad Othman
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Abstract
A dual approach with slight modification was used to produce a nanocomposite using graphene sheets. The nanocomposite may be used for medical devices such as bone cement, dentures, paper, paint and automotive industries. A novel Microwave irradiation (MWI) was used to obtain R-(GO-(STY-co-MMA)). The results indicate that the nanocomposite obtained using the MWI had a better morphology and dispersion with enhanced thermal stability compared with the nanocomposite prepared without MWI. An average increase of 136% in hardness and 76% in elastic modulus were achieved through the addition of only 2.0 wt % of RGO nanocomposite obtained via the MWI method.
Claims11
A method of making a nanocomposite, comprising:
- adding sulphuric acid solution to a natural graphite to oxidize the natural graphite to create a solution 1;
- adding potassium permanganate to the solution 1 to make solution 2 and maintaining the temperature of solution 2 below 20° C.;
- stirring the solution 2 for 1 hour at 35° C.;
- washing the solution 2 with a hydrogen peroxide and water;
- filtering the solution 2 to isolate a graphene oxide;
- drying the graphene oxide at 80° C. to obtain a dry powder of graphene oxide;
- and
- mixing the powder of graphene oxide in a specific ratio with a styrene and methyl methacrylate mixture, and stirring and sonicating for an hour to make a suspension, wherein the weight ratio between styrene and methyl methacrylate is 1:1.
A method of making a nanocomposite comprising:
- adding sulphuric acid solution to a natural graphite to oxidize the natural graphite to create a solution 1;
- adding potassium permanganate to the solution 1 to make solution 2 and maintaining the temperature of solution 2 below 20° C.;
- stirring the solution 2 for 1 hour at 35° C.;
- washing the solution 2 with a hydrogen peroxide and water;
- filtering the solution 2 to isolate a graphene oxide;
- drying the graphene oxide at 80° C. to obtain a dry powder of graphene oxide;
- dissolving the dry power of graphene oxide in 20 ml of deionized water to make a homogeneous solution;
- adding 400 microliter of a hydrazine hydrate reducing agent to create a mixture;
- microwaving the mixture in 30 second cycles, wherein the 30 s cycle was on for 10 s and off and stirring for 20 s, for a total of two minutes to obtain a black color liquid comprising reduced graphene oxide;
- and
- separating the reduced graphene oxide using centrifugation and drying at 80° C. overnight to obtain a reduced graphene oxide powder.
A method of making a nanocomposite, comprising:
- adding sulphuric acid solution to a natural graphite to oxidize the natural graphite to create a solution 1, wherein 3.5 g of the natural graphite was used;
- adding potassium permanganate to the solution 1 to make solution 2 and maintaining the temperature of solution 2 below 20° C.;
- stirring the solution 2 for 1 hour at 35° C.;
- washing the solution 2 with a hydrogen peroxide and water;
- filtering the solution 2 to isolate a graphene oxide;
- and
- drying the graphene oxide at 80° C. to obtain a dry powder of graphene oxide.
Dependencies are inferred from the claim text.