Polymerization method for formation of thermally exfoliated graphite oxide containing polymer
A process for polymerization of at least one monomer including polymerizing the at least one monomer in the presence of a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 m 2 /g to 2600 m 2 /g.
1. A process for the polymerization of at least one monomer, comprising the step of polymerizing the at least one monomer in the presence of a modified graphite oxide material, comprising thermally exfoliated graphite oxide having a surface area of from about 300 m 2 /g to 2600 m 2 /g.
2. The process of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 400 m 2 /g to 2600 m 2 /g.
3. The process of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 500 m 2 /g to 2600 m 2 /g.
4. The process of claim 1 , wherein the thermally exfoliated graphite oxide has a bulk density of from about 40 kg/m 3 to 0.1 kg/m 3 .
5. The process of claim 1 , wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 60/40 to 95/5.
6. The process of claim 5 , wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 65/35 to 85/15.
7. The process of claim 1 , wherein the thermally exfoliated graphite oxide has been compounded into the monomers.
8. The process of claim 1 , wherein the polymerization is a free radical polymerization and the thermally exfoliated graphite oxide is an initiator for the polymerization of the monomer.
9. The process of claim 8 , wherein the monomer is one or more members selected from the group consisting of styrene, methacrylates, acrylates, butadiene, and their derivatives.
10. The process of claim 8 , wherein the free radical polymerization is reversible addition-fragmentation chain transfer (RAFT) polymerization, atom-transfer radical (ATR) polymerization, nitroxide mediated polymerization (NMP), or macromolecular design via interchange of xanthates (MADIX).
11. The process of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 600 m 2 /g to 2600 m 2 /g.
12. The process of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 800 m 2 /g to 2600 m 2 /g.
13. The process of claim 1 , wherein the thermally exfoliated graphite oxide has an X-ray diffraction pattern in which the area under the diffraction peak between 2θ=12.5 and 14.5° is less than 15 percent of the total area under the diffraction peak between 2θ=9 and 21°.
14. The process of claim 1 , wherein the thermally exfoliated graphite oxide displays essentially no signature of graphite and/or graphite oxide, as determined by X-ray diffraction.
15. The process of claim 1 , wherein the thermally exfoliated graphite oxide is obtained from heating graphite oxide at a rate of at least 120° C./min.
16. The process of claim 1 , wherein the thermally exfoliated graphite oxide is obtained from heating graphite oxide at a rate of at least 2000° C./min.
17. The process of claim 15 , wherein the heating is at a temperature of from 700 to 2000° C.
18. The process of claim 15 , wherein the heating is at a temperature of from 900 to 2000° C.
19. The process of claim 15 , wherein the graphite oxide is heated for between 1 second and 5 minutes.
20. The process of claim 15 , wherein the graphite oxide is heated for between a fraction of a second and about 1 second.
21. The process of claim 15 , wherein the graphite oxide is heated for between 1 second and 10 seconds.