Polymer dissolution and blend formation in ionic liquids
AssigneeThe Board of Trustees of The University of Alabama
InventorsJohn D. Holbrey, Richard P. Swatloski, Ji Chen, Dan Daly, Robin D. Rogers
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Abstract
The present invention relates to processes utilizing ionic liquids for the dissolution of various polymers and/or copolymers, the formation of resins and blends, and the reconstitution of polymer and/or copolymer solutions, and the dissolution and blending of “functional additives” and/or various polymers and/or copolymers to form advanced composite materials.
Claims45
A process for preparing a polymer blend, comprising:
- (a) admixing at least two differing polymeric materials with at least one ionic liquid, wherein the ionic liquid comprises one or more cations and one or more anions and is substantially free of a nitrogen-containing base;
- and wherein one of the polymeric materials is cellulose and the other is selected from the group consisting of starch, chitin, polyolefin, polyacrylonitrile, poly-2-hydroxymethylmethacrylate, poly-2-hydroxyethylmethacrylate, polyvinyl alcohol, linear polyethyleneimine, branched polyethyleneimine, polyaniline, polyethylene glycol, and polyethylene oxide with terminal amine groups;
- and
- (b) adding a non-solvent to the composition of step (a), wherein the non-solvent dissolves the ionic liquid but not the polymeric materials,
- thereby providing the polymer blend and a liquid phase comprising the ionic liquid.
A mixture comprising at least two differing polymeric materials where one of the polymeric materials comprises cellulose and the other polymeric material comprises polyacrylonitrile, poly-2-hydroxyethylmethacrylate, polyvinyl alcohol, polyaniline, or polyethylene glycol and at least one ionic liquid, wherein the ionic liquid comprises one or more cations and one or more anions.
A process for preparing a polymer blend, comprising:
- (c) admixing at least two differing polymeric materials with at least one ionic liquid, wherein the ionic liquid comprises one or more cations and one or more anions and is substantially free of a nitrogen-containing base;
- and wherein one of the polymeric materials is chitin and the other is selected from the group consisting of starch, polyolefin, polyacrylonitrile, poly-2-hydroxymethylmethacrylate, poly-2-ydroxyethylmethacrylate, polyvinyl alcohol, linear polyethyleneimine, branched polyethyleneimine, polyaniline, polyethylene glycol, and polyethylene oxide with terminal amine groups;
- and
- (d) adding a non-solvent to the composition of step (a), wherein the non-solvent dissolves the ionic liquid but not the polymeric materials,
- thereby providing the polymer blend and a liquid phase comprising the ionic liquid.
A mixture comprising at least two differing polymeric materials where one of the polymeric materials comprises chitin and the other polymeric material comprises polyacrylonitrile, poly-2-hydroxyethylmethacrylate, polyvinyl alcohol, polyaniline, or polyethylene glycol and at least one ionic liquid, wherein the ionic liquid comprises one or more cations and one or more anions.
Dependencies are inferred from the claim text.