Abstract: Disclosed herein is a compound made by copolymerizing a poly(ethylene glycol) acrylate with a first acrylate monomer having a first functional group that interacts with a third functional group having a third functional group type selected from anionic groups, cationic groups, or perfluoroalkyl groups. Optionally, the copolymerization includes a second acrylate monomer having a second functional group that interacts with a fourth functional group having a fourth functional group type selected from anionic groups, cationic groups, and perfluoroalkyl groups. The third functional group type and the fourth functional group type are different. When the compound is porous, as when made by high internal phase emulsion polymerization, it may be used for per- and poly-fluoro alkyl substance decontamination.

Abstract: Disclosed herein is a composition having a nylon polymer and tannic acid. The nylon polymer and the tannic acid are homogenously distributed in the composition. The composition may be made by dissolving a nylon polymer and tannic acid in a solvent to form a solution and removing the solvent from the solution to form the composition.

Abstract: An insect repellent material made from recycled polyethylene terephthalate and an insect repellent or from polyethylene terephthalate, N,N-diethyl-meta-toluamide, and picaridin. The material may be in the form of a fiber spun from a solution of the recycled polyethylene terephthalate and the insect repellent.

Abstract: Disclosed herein is a composition having an insect repellent compound and a polymer that is miscible in the insect repellent compound at 23° C. Also disclosed herein is a method of: providing an insect repellent compound, providing a polymer that is miscible in the insect repellent compound at 23° C., and dissolving the polymer in the insect repellent compound to form a composition.

Abstract: Disclosed herein is a fiber having a sheath including a polymer and a core including a non-cholesteric liquid crystal. The sheath is transparent to visible light. The fiber may an average diameter of no more than 10 microns, and at least 90% of the fiber has a diameter within 20% of the average diameter. The sheath may include a compound capable of photoisomerization that extends into the core. The interference color of the fiber may be reversibly changed by exposure to light or a temperature change.

Abstract: A fiber having a polymer sheath and a core. The core has a liquid crystal and a compound capable of photoisomerization, such as that shown below. A method of: providing a first solution of a polymer, providing a second solution of a liquid crystal and compound capable of photoisomerization, and electrospinning the first solution and the second solution to form the fiber.