Method of making stimuli responsive liquid crystal-polymer composite fibers
AssigneeKent State University
InventorsEbru A. Buyuktanir, Margaret W. Frey, John L. West
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Abstract
A process for making a stimuli responsive liquid crystal-polymer composite fiber comprising mixing a liquid crystal, a polymer, and a solvent; processing the mixture in the presence of an electric potential across a collection distance; phase separating a polymer and said liquid crystal; and encapsulating said liquid crystal within said polymer. The fiber generally comprises a liquid crystal core and a polymer shell wherein the liquid crystal is responsive to chemical changes, thermal and mechanical effects, as well as electrical and magnetic fields. A liquid crystal containing fiber can be utilized as optical fibers, in textiles, and in optoelectronic devices.
Claims20
A process for forming a liquid crystal containing polymer fiber, comprising the steps of:
- mixing at least one liquid crystal, one or more at least semi-transparent polymers, and at least one solvent, and forming a mixture, wherein said liquid crystal has a weight average molecular weight of from about 200 to about 1,000 grams per mole;
- processing said mixture in the presence of a voltage differential applied across a collection distance;
- phase separating said polymer from said liquid crystal;
- and
- encapsulating said liquid crystal with said polymer to form a liquid crystal containing polymer fiber.
A process for making a liquid crystal-polymer composite fiber, comprising the steps of:
- forming a composition comprising a mixture of at least one liquid crystal, one or more at least semi-transparent polymers, and a solvent, wherein said one or more polymers are partially or fully dissolved by the solvent, said liquid crystal exceeding its solubility limit in said polymer;
- and
- electrospinning the composition and forming a phase separated liquid crystal-polymer composite fiber having a shell comprising the one or more polymers and a core comprising the at least one liquid crystal.
Dependencies are inferred from the claim text.