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US 2007/0191510 A1Published application
Polymer composites, polymer nanocomposites and methods
OwnerDavid J. Chaikoinventor
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OwnerDavid J. Chaikoinventor
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Polymer composites and polymer nanocomposites are designed and manufactured by choosing surface-modified fillers having a solid surface energy matching the solid surface energy of the polymer, wherein the advancing contact angle of the polymer on the surface-modified filler is less than about 5 degrees. The fillers are surface-modified by adsorption of amorphous polymeric surfactants, consisting of either mono-modal, bimodal, or multi-modal size distribution. The surface-modified fillers of this invention display a measurable yield stress and a viscosity of about 30.000 Pa·s or less at room temperature, and comprise one or more materials selected from the group consisting of minerals, plant material, animal material, carbon fiber, graphite, amorphous carbon, carbon nanotubes, and glass fiber. This invention also provides a method for manufacturing a polymer nanocomposite which includes exfoliating an amorphous organoclay in a crystalline or semi-crystalline polymer by melt compounding the constituents in the absence of added solvents, activators, edge-modifiers, compatibilizers, or hydrotropes.
A surface-modified filler having a measurable yield stress and a viscosity of about 30,000 Pa·s or less at substantially room temperature.
A nanocomposite comprising a filler having an amorphous coating on at least a portion of the surface thereof dispersed in the matrix of a crystalline or semi-crystalline polymer.
A nanocomposite comprising a surface-modified filler and a polymer wherein an advancing contact angle of said polymer on said surface-modified filler is no more than about five degrees.
A surface-modified filler having an surface HLB of less than about 0.20.
A surface-modified filler comprising a mineral having a surface and an amorphous onium salt associated with at least a portion of said surface.
A nanocomposite consisting essentially of a surface-modified filler dispersed in a polymer matrix displaying substantially no low angle scattering of visible light when in a melt state.
A nanocomposite comprising a surface-modified filler dispersed in a polyolefin matrix displaying substantially no low angle scattering of visible light when in a melt state.
A nanocomposite comprising a surface-modified filler dispersed in a polymer matrix displaying no low angle scattering of visible light when in a melt state and not containing any one or more of a compatibilizer, activator, hydrotrope, solvent, or edge modifier.
A method of forming a surface-modified filler comprising adsorbing an amorphous polymeric surfactant having either a mono-modal, bimodal, or multi-modal size distribution onto a surface of a filler.
A method of forming a surface-modified filler comprising:
The method of claim Y wherein the surface HLB of the surface-modified filler is less than about 0.20.
A method of producing a nanocomposite comprising compounding a surface-modified filler with a polymer wherein an advancing contact angle of the polymer on the surface-modified filler is no more than about five degrees.
A method of producing a nanocomposite comprising:
A method of selecting a surface-modified filler for compounding with a polymer to form a nanocomposite, said method comprising:
A method comprising:
Dependencies are inferred from the claim text.