Polymer-organic matter composites using solid-state shear pulverization
Methods for preparation of polymer materials incorporating various organic components, including but not limited to solid and/or liquid organic wastes, post-consumer refuse and agricultural, commercial and/or manufacturing by-products, using solid-state shear pulverization.
1. A method of rotationally-molding a polymer product comprising an organic component, said method comprising:
providing a polymer component and organic component mixture, wherein said organic component is selected from coffee grounds, citrus peels, grape waste, coconut shells, rice husk hulls, rice husk ash, seaweeds, and combinations thereof;
applying a mechanical energy to said mixture through solid-state shear pulverization in the presence of cooling at least partially sufficient to maintain said mixture in a solid state during said pulverization, said pulverization absent a solvent, at a temperature below the melting point of said polymer component and sufficient to provide a powdered mixture; and
introducing said pulverized powder mixture into a rotational molding apparatus, to produce a rotationally-molded product.
2. The method of claim 1 wherein said polymer component is selected from virgin and recycled polyesters, polyolefins, polyamides, epoxies, polyimides, polyurethanes, polystyrenes, polycarbonates, polyacrylates, polyvinyls, polyethers, polyacrylonitriles, polyacetals, polysiloxanes, polyetherketones, elastomers and copolymers thereof, combinations of said polymers, combinations of said copolymers and combinations of said polymers and copolymers.
3. The method of claim 1 wherein said polymer component comprises a polyolefin.
4. The method of claim 1 wherein said organic component comprises about 1.0 wt. % to about 50.0 wt. % of said mixture.
5. The method of claim 1 wherein said rotationally molded product is incorporated into an article of manufacture.
6. A method of using solid-state shear pulverization to reduce the polymer content of a polymer-organic component composite, said method comprising:
providing a polymer component and organic component mixture, wherein said organic component is selected from coffee grounds, citrus peels, grape waste, coconut shells, rice husk hulls, rice husk ash, seaweeds, and combinations thereof;
applying a mechanical energy to said mixture through solid-state shear pulverization in the presence of cooling at least partially sufficient to maintain said mixture in a solid-state during said pulverization, said pulverization absent a solvent, at a temperature below the melting point of said polymer component and sufficient to provide a powdered mixture; and
melt-processing said pulverized mixture to provide a molded product.
7. The method of claim 6 wherein said polymer component is selected from virgin and recycled polyesters, polyolefins, polyamides, epoxies, polyimides, polyurethanes, polystyrenes, polycarbonates, polyacrylates, polyvinyls, polyethers, polyacrylonitriles, polyacetals, polysiloxanes, polyetherketones, elastomers and copolymers thereof, combinations of said polymers, combinations of said copolymers and combinations of said polymers and copolymers.
8. The method of claim 6 wherein said polymer component comprises a polyolefin.
9. The method of claim 6 wherein said organic component comprises about 1.0 wt. % to about 50 wt. % of said mixture.
10. The method of claim 6 wherein said composite is incorporated into an article of manufacture.