Abstract: Disclosed is a closed type photo-bio reacting apparatus for microalgae. The apparatus includes a reactor body, a hollow fiber membrane contact unit, a fluid circulating pump, a light source, and an angle adjusting lift. The reactor body cultures the microalgae. The hollow fiber membrane contact unit is disposed in the reactor body and supplies carbon dioxide to culture solution circulating in the reactor body. The fluid circulating pump circulates the culture solution in the reactor body. The light source irradiates light into the reactor body. The angle adjusting lift adjusts an inclination angle of the reactor body according to an irradiation angle of the light source.

Abstract: Disclosed is a high-speed photobioreactor for culturing microalgae using a hollow fiber membrane. More particularly a high-speed photobioreactor for culturing microalgae using a hollow fiber membrane capable of facilitating growth of microalgae and maximizing carbon dioxide fixation by increasing the rate of carbon dioxide saturation in a culture medium. Specifically, a high-speed photobioreactor for culturing microalgae using a hollow fiber membrane includes a reactor main body for culturing microalgae; a hollow fiber membrane module for supplying carbon dioxide into a culture medium in the reactor main body; a culture medium circulation pump for circulating the culture medium; and a defoamer for removing foams produced in the culture medium.

Abstract: An ion exchange composition membrane is made up of dispersed natural clay and/or organized clay in ion conducting polymeric film as a methanol barrier material. The membrane exhibits low methanol crossover, high proton conductivity and is thus suitable for use in direct methanol fuel cells with low costal advantage.

Abstract: Disclosed is a method for preparing a clay-dispersed polymer nanocomposite. In this method, a polymer, which carries oxygen atoms within the repeating units of its backbone and is thermodynamically compatible with a binder resin, is used as a matrix resin. Useful is poly(&egr;-caprolactone) owing to its thermodynamic compatibility with poly(styrene-co-acrylonitrile)copolymers, poly(acrylonitrile-co-butadiene-co-styrene) copolymers, and poly(vinylchloride) resins. Poly(&egr;-caprolactone) resins aid the binder resins to penetrate into silicate layers so that the silicate of the organophilic clay was completely delaminated to silicate lamellas.

Abstract: The present invention relates to composite polymers containing nanometer-sized metal particles and manufacturing method thereof, which can be uniformly dispersed nanometer-sized metal particles into polymers, thereby allowing the use thereof as optically, electrically and magnetically functional materials. The method for manufacturing composite polymers containing nanometer-sized metal particles includes the steps of: dispersing at least one metal precursor into a matrix made of polymers in a molecule level; and irradiating rays of light on the matrix containing the metal precursors dispersed in the molecule level and reducing the metal precursors into metals and fixing nanometer sized metal particles inside of matrix.

Abstract: A facilitated transport membrane with improved permeance and selectivity to alkene-based unsaturated hydrocarbons is provided. The facilitated transport membrane includes a solid state polymer electrolyte and additionally a non-volatile surfactant that enhances long-term operation stability. In preparing the facilitated transport membrane for separation of alkenes, a porous supporting membrane is coated with a solid polymer electrolyte layer having a non-volatile polymer, a non-volatile surfactant, and a salt of a transition metal capable of complexing selectively and reversibly with alkenes.

Abstract: Disclosed is an inorganic-organic hybrid polymer composed of nano-particles on the surface using a dendrimer and a manufacturing method thereof, in which nanometer-sized inorganic (metal) particles are uniformly dispersed across the surface of the polymer and available as optically, electrically and magnetically functional materials. The method includes the steps of: forming a functional anhydride group on a polymer-based matrix; selectively adding metal or inorganic salts to the dendrimer to prepare either of dendrimer-metal precursor solution or dendrimer-inorganic particle solution; inducing the reaction between the functional anhydride group of the surface of polymer matrix with the solution to form a chemical bond between the matrix and the dendrimer; and reducing the metal ions or inorganic particle by irradiation of light.

Abstract: An ion exchange composition membrane is made up of dispersed natural clay and/or organized clay in ion conducting polymeric film as a methanol barrier material. The membrane exhibits low methanol crossover, high proton conductivity and is thus suitable for use in direct methanol fuel cells with low costal advantage.

Abstract: Disclosed is a novel facilitated olefin transport membrane with improved permeance and selectivity to alkene-based unsaturated hydrocarbons, which includes a solid state polymer electrolyte and additionally a non-volatile surfactant that remarkably enhances the long-term operation stability.

Abstract: The present invention relates to composite polymers containing nanometer-sized metal particles and manufacturing method thereof, which can be uniformly dispersed nanometer-sized metal particles into polymers, thereby allowing the use thereof as optically, electrically and magnetically functional materials. The method for manufacturing composite polymers containing nanometer-sized metal particles includes the steps of: dispersing at least one metal precursor into a matrix made of polymers in a molecule level; and irradiating rays of light on the matrix containing the metal precursors dispersed in the molecule level and reducing the metal precursors into metals and fixing nanometer sized metal particles inside of matrix.

Abstract: Disclosed is an inorganic-organic hybrid polymer composed of nano-particles on the surface using a dendrimer and a manufacturing method thereof, in which nanometer-sized inorganic (metal) particles are uniformly dispersed across the surface of the polymer and available as optically, electrically and magnetically functional materials. The method includes the steps of: forming a functional anhydride group on a polymer-based matrix; selectively adding metal or inorganic salts to the dendrimer to prepare either of dendrimer-metal precursor solution or dendrimer-inorganic particle solution; inducing the reaction between the functional anhydride group of the surface of polymer matrix with the solution to form a chemical bond between the matrix and the dendrimer; and reducing the metal ions or inorganic particle by irradiation of light.