TY - PAT
T1 - Stable Dispersions Of Polymer-Coated Graphitic Nanoplatelets
AU - Nguyen, SonBinh
N1 - filingdate: 2006-11-16
issueddate: 2011-3-29
Status: published
attorneydocketnumber: 2005-052-03
PY - 2011/3/29
Y1 - 2011/3/29
N2 - Stable Dispersions of Graphitic Nanoplatelets in Polymer Matrices
NU 2005-052
Inventors
Sonbinh Nguyen
Rodney Ruoff
Sash Stankovich
Abstract
Northwestern researchers have developed processes to produce stable dispersions of graphite nanoplatelets in aqueous or organic media. By distributing these treated nanoplatelets into various matrices, they provide useful mechanical, electrical and chemical properties to composite materials. Graphitic nanoplatelets are an inexpensive alternative to carbon nanotubes because of their predicted excellent in-plane mechanical, thermal and electrical properties. However, their full utilization requires complete separation and dispersion before incorporation into a matrix such as polymers. The investigators have devised two techniques to accomplish graphite exfoliation in aqueous or organic media. One process forms a polymer coating of graphitic nanoplatelets that are readily dispersible in water. This solution may be utilized for a variety of composite and device applications. A second process utilizes organic isocyanates to form graphitic nanoplatelets with chemical functions which would be useful for a variety of composite and device applications requiring organic media.
Applications
o Fuel tank and fuel line coatings
o Electronic enclosures
o Automotive parts
o Aerospace
o Appliances
o Sporting goods
o Coatings and paints
o Batteries
o Fuel cells
Advantages
o Scalable
o Cost-effective
o Exhibits high electrical conductivity
Publications
Stankovich S, Piner RD, Chen X, Wu N, Nguyen ST and Ruoff RS (2006) Stable aqueous dispersions of graphitic nanoplatelets via the reduction of exfoliated graphite oxide in the presence of poly(sodium 4-styrenesulfonate). Journal of Materials Chemistry. 16: 155-158.
Stankovich S, Dikin DA, Dommett GHB, Kohlhaas KM, Zimney EJ, Stach EA, Piner RD, Nguyen ST and Ruoff RS (2006) Graphene-based composite materials. Nature 442: 282-286.
Stankovich S, Piner RD, Nguyen ST, Ruoff RS (2006) Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets. Carbon. 44: 3342-3347.
IP Status
Issued US Patent No. 7,914,844
Marketing Contact
Allan Nader, PhD
Invention Manager
(e) [email protected]
(p) 847-491-4456
AB - Stable Dispersions of Graphitic Nanoplatelets in Polymer Matrices
NU 2005-052
Inventors
Sonbinh Nguyen
Rodney Ruoff
Sash Stankovich
Abstract
Northwestern researchers have developed processes to produce stable dispersions of graphite nanoplatelets in aqueous or organic media. By distributing these treated nanoplatelets into various matrices, they provide useful mechanical, electrical and chemical properties to composite materials. Graphitic nanoplatelets are an inexpensive alternative to carbon nanotubes because of their predicted excellent in-plane mechanical, thermal and electrical properties. However, their full utilization requires complete separation and dispersion before incorporation into a matrix such as polymers. The investigators have devised two techniques to accomplish graphite exfoliation in aqueous or organic media. One process forms a polymer coating of graphitic nanoplatelets that are readily dispersible in water. This solution may be utilized for a variety of composite and device applications. A second process utilizes organic isocyanates to form graphitic nanoplatelets with chemical functions which would be useful for a variety of composite and device applications requiring organic media.
Applications
o Fuel tank and fuel line coatings
o Electronic enclosures
o Automotive parts
o Aerospace
o Appliances
o Sporting goods
o Coatings and paints
o Batteries
o Fuel cells
Advantages
o Scalable
o Cost-effective
o Exhibits high electrical conductivity
Publications
Stankovich S, Piner RD, Chen X, Wu N, Nguyen ST and Ruoff RS (2006) Stable aqueous dispersions of graphitic nanoplatelets via the reduction of exfoliated graphite oxide in the presence of poly(sodium 4-styrenesulfonate). Journal of Materials Chemistry. 16: 155-158.
Stankovich S, Dikin DA, Dommett GHB, Kohlhaas KM, Zimney EJ, Stach EA, Piner RD, Nguyen ST and Ruoff RS (2006) Graphene-based composite materials. Nature 442: 282-286.
Stankovich S, Piner RD, Nguyen ST, Ruoff RS (2006) Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets. Carbon. 44: 3342-3347.
IP Status
Issued US Patent No. 7,914,844
Marketing Contact
Allan Nader, PhD
Invention Manager
(e) [email protected]
(p) 847-491-4456
M3 - Patent
M1 - 7914844
ER -