Abstract: The present invention is directed to apparatus and methods for making multi-component microfibers and nanofibers and non-woven fiber mats thereof. In some embodiments, the fibers have diameters ranging from 10 nm or more to 3000 nm or less. In some embodiments, the fibers are made of more than one component and have one or a mix of the following morphologies: core-sheath, side by side, stratified and/or interpenetrating structures. In some embodiments the multi-component fibers are made from two spinnable fluids and in other embodiments the multi-component fibers are made from a single spinnable solution having two different material dissolved within. Unlike certain prior art processes, the present invention does not involve application of an electrical charge to the spinnable fluid to produce the fibers and, as a result, the solvent selection is not limited to those solvents conducive to being electrically charged.

Abstract: A thermally conductive composition and a system and method for forming such compositions. The thermally conductive composition comprises a polymer material and a thermally conductive filler, such as boron nitride. In one embodiment, a method of forming a composition having high through-plane conductivity comprises mixing an isotropic boron nitride material, such as boron nitride agglomerates, and a polymer resin material under conditions such that the peak stress during mixing does not exceed 80 kPa.

Abstract: A polymeric system is disclosed wherein at least one minor polymeric component is dispersed into a major polymeric component such that the minor polymeric component is dispersed with less than micro-scale dispersed-phase morphologies.