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US 12,479,977 B2Granted
Nanocomposite particles and methods of making and using same
AssigneeKinneret Academic College
InventorRan Suckeveriene
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Abstract
A population of nanocomposite particles including nanoparticles and poly (ethylene imine) (PEI) grafted thereto. In some embodiments there is no intervening layer between the nanoparticles and the PEI. Methods of making and using nanocomposite particles are also disclosed.
Claims20
A method comprising:
- (a) to a mixture of nanoparticles dispersed in an organic solvent, adding at least 5% poly (ethylene imine) (PEI) relative to the nanoparticles on a w/w basis;
- (b) adding at least 0.1% benzoyl peroxide (BP) relative to said nanoparticles on a w/w basis;
- (c) sonicating the mixture thereby covalently grafting the PEI to the nanoparticles;
- and
- (d) extracting non-grafted PEI fractions.
2 more elements
A method comprising:
- (a) premixing nanoparticles coated with a PEI-grafted coating with polymeric material to form a premix;
- (b) mixing additional polymeric material with the premix to form a final mixture;
- and
- (c) extruding the final mixture.
1 more element
A method comprising:
- (a) dispersing PEI-grafted nanoparticles in a liquid media to produce a suspension;
- (b) applying said suspension to a surface of a product;
- and
- (c) evaporating said liquid media.
1 more element
Dependencies are inferred from the claim text.