Multiple emulsions and techniques for the formation of multiple emulsions are generally described. A multiple emulsion, as used herein, describes larger droplets that contain one or more smaller droplets therein. In some embodiments, the larger droplet or droplets may be suspended in a carrying fluid containing the larger droplets that, in turn, contain the smaller droplets. As described below, multiple emulsions can be formed in one step in certain embodiments, with generally precise repeatability, and can be tailored in some embodiments to include a relatively thin layer of fluid separating two other fluids.

A process for forming microspheres is disclosed. The process includes contacting a solvent with a modified cellulose to form a solution; contacting the modified cellulose solution with at least one bioactive agent to form a discontinuous phase liquid; contacting the discontinuous phase liquid with a continuous phase liquid to form an emulsion; and contacting the emulsion with a third phase liquid to extract the solvent from the emulsion, thereby forming a plurality of modified cellulose microspheres.

A process for forming microspheres is disclosed. The process includes contacting a solvent with a modified cellulose to form a solution; contacting the modified cellulose solution with at least one bioactive agent to form a discontinuous phase liquid; contacting the discontinuous phase liquid with a continuous phase liquid to form an emulsion; and contacting the emulsion with a third phase liquid to extract the solvent from the emulsion, thereby forming a plurality of modified cellulose microspheres.

A Provided herein is a benefit agent delivery particle having a core-shell structure in which a shell of polymeric material entraps a core containing benefit agent, and the shell includes a recycled polymer.

Methods of making personal care compositions including microcapsules and methods of enhancing the efficacy of the microcapsules in said personal care compositions.

Provided is a method for producing a liposome having safety and stability. According to the present invention, it is possible to provide a method for producing a liposome, including a step of mixing an oil phase with at least one lipid dissolved in an organic solvent and a water phase and stirring an aqueous solution containing the lipids, and a step of evaporating the organic solvent from the aqueous solution containing the liposomes obtained in the stirring step, in which the organic solvent is a mixed solvent of a water-soluble organic solvent and an ester-based organic solvent.

A nozzle includes a nozzle body having a fluid passageway to which extension tubes are communicated. Each extension tube includes an end having an outlet port. The outlet ports are spaced from each other. An apparatus includes the nozzle, a fluid tank into which the extension tubes extends, a fluid shear device mounted in the fluid tank, and a temperature control system in which the fluid tank is mounted. A method includes filling a water phase fluid into the fluid tank. An oil phase fluid flows out of the nozzle body via the outlet ports. The water phase fluid is disturbed and flows out of the outlet ports to form semi-products of microparticles in the fluid tank. Each semi-product has an inner layer formed by the oil phase fluid and an outer layer formed by the water phase fluid. The outer layers of the semi-products are removed to form microparticles.

A nozzle includes a nozzle body having a fluid passageway to which extension tubes are communicated. Each extension tube includes an end having an outlet port. The outlet ports are spaced from each other. An apparatus includes the nozzle, a fluid tank into which the extension tubes extends, a fluid shear device mounted in the fluid tank, and a temperature control system in which the fluid tank is mounted. A method includes filling a water phase fluid into the fluid tank. An oil phase fluid flows out of the nozzle body via the outlet ports. The water phase fluid is disturbed and flows out of the outlet ports to form semi-products of microparticles in the fluid tank. Each semi-product has an inner layer formed by the oil phase fluid and an outer layer formed by the water phase fluid. The outer layers of the semi-products are removed to form microparticles.

The invention relates to a method of making hybrid organic-inorganic core-shell nano-particles, comprising the steps of a) providing colloidal organic particles comprising a synthetic polyampholyte as a template; b) adding at least one inorganic oxide precursor; and c) forming a shell layer from the precursor on the template to result in core-shell nano-particles. With this method it is possible to make colloidal organic template particles having an average particle size in the range of 10 to 300 nm; which size can be controlled by the comonomer composition of the polyampholyte, and/or by selecting dispersion conditions. The invention also relates to organic-inorganic or hollow-inorganic core-shell nano-particles obtained with this method, to compositions comprising such nano-particles, to different uses of said nano-particles and compositions, and to products comprising or made from said nano-particles and compositions, including anti-reflective coatings and composite materials.

Disclosed is a method of producing a vesicle containing a metallic nanoparticle that is covalently bound to at least one hydrophilic polymer and at least one hydrophobic polymer, wherein the method involves dispersing the polymer-bound metallic nanoparticle in an organic solvent, adding an aqueous solution containing a dispersing aid to form a mixed solution, sonicating the mixed solution to form an emulsion; and removing the organic solvent from the emulsion until the vesicle forms. Using this method, the formed vesicle has a diameter of 20-150 nm, which is useful for a method of conducting photothermal therapy (PTT) for killing cells, such as cancer cells.