US 12,331,242 B2
Using graphite nano-platelets to improve the integrity of oil and gas wells
Arash Dahi Taleghani, University Park, PA (US); and Seyedeh Maryam Tabatabaei, State College, PA (US)
Assigned to The Penn State Research Foundation, University Park, PA (US)
Filed by THE PENN STATE RESEARCH FOUNDATION, University Park, PA (US)
Filed on Feb. 22, 2023, as Appl. No. 18/172,697.
Application 18/172,697 is a division of application No. 16/836,414, filed on Mar. 31, 2020, granted, now 11,618,843.
Claims priority of provisional application 62/827,464, filed on Apr. 1, 2019.
Prior Publication US 2023/0193110 A1, Jun. 22, 2023
Int. Cl. C09K 8/467 (2006.01); C09K 8/42 (2006.01)
CPC C09K 8/467 (2013.01) [C09K 8/426 (2013.01); C09K 2208/10 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method of modifying the surface energy of graphite nanoplatelets (GnP), the method comprising:
A process of acid functionalizing a surface of GnP via chemical surface energy alteration, wherein the chemical surface energy alteration generates a functional group on the surface of GnP; and
removing, by washing GnP with acetone, carboxylated carbonaceous fragments (CCFs) formed on the surface of the GnP during the acid functionalizing process.