Stereolithography additive manufacturing of anion exchange membrane resin
AssigneeLawrence Livermore National Security, LLC
InventorsEric B. Duoss, Megan Ellis, Sarah E. Baker, Nikola Dudukovic, Auston Louis Clemens, James Spencer Oakdale
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Abstract
A mixture for forming an anion exchange membrane includes a rigid monomer, an active monomer, and a polymerization initiator. The active monomer includes an acrylate group and a functional group selected from the following: a cation group, a halide group configured to be substituted with a cation group, or a leaving group configured to be substituted with a cation group.
Claims20
A mixture for forming an anion exchange membrane, the mixture comprising:
- a rigid oligomer;
- an active monomer comprising an acrylate group and a functional group selected from the group consisting of:
- a cation group, a halide group configured to be substituted with a cation group, and a leaving group configured to be substituted with a cation group;
- a polymerization initiator.
A product, comprising:
- a printed three-dimensional structure comprising a polymer network having cationic functional groups to facilitate ion transport through the three-dimensional structure,
- wherein the three-dimensional structure comprises features arranged in a predefined geometric pattern, the features comprising walls, wherein the walls have an average thickness in a range of greater than 5 microns to less than 150 microns.
A method of forming a three-dimensional structure for transport of anions, the method comprising:
- obtaining a mixture comprising a rigid oligomer, an active monomer comprising an acrylate group and a halide group, and a polymerization initiator;
- heating the mixture to reduce a viscosity of the mixture;
- printing the three-dimensional structure by using an additive manufacturing technique to print the mixture to form a three-dimensional structure comprising a polymer network having a plurality of halide groups;
- and
- substituting halide groups in the polymer network with cation groups for functionalizing the polymer network for ion transport.
Dependencies are inferred from the claim text.