Abstract:
본 발명은 은 나노 입자를 함유한 양이온성 고분자 나노 섬유 제조에 관한 것으로서, 폴리비닐알코올(polyvinyl alcohol)이 존재하는 수용액 상에 일정량의 은 이온을 전단력(shear force) 하에 녹인 후, 라디칼 개시제(radical initiator)를 도입하여 은 이온의 환원을 유도한 뒤, 양이온성 고분자 단량체를 주입하여 적정 온도와 시간에서 라디칼 매개 분산 중합(radical mediated dispersion polymerization)을 이용하여 은 나노 입자를 함유한 양이온성 고분자 나노 섬유를 제조하는 방법을 제공한다. 본 발명에 따르면, 간단하고 저렴한 공정을 이용하여 은 나노 입자를 함유한 양이온성 고분자 나노 섬유를 용이하게 제조할 수 있으며, 효과적으로 은 나노 입자를 고분자 나노 섬유 내에 포함하기 위하여 추가적인 개질 공정이나 개질제가 요구되지 않는다는 장점을 가진다. 또한 본 발명을 통해 제조될 수 있는 은 나노 입자를 함유한 양이온성 고분자 나노 섬유는 은 나노 입자의 선처리 공정이 필요없을 뿐 아니라, 은 이온을 사용함으로써 제조 과정이 단순하며, 양이온성 고분자 나노 섬유의 종류 및 두께에 제한 없이 제조가 가능하다. 더욱이, 본 발명에서 제조될 수 있는 은 나노 입자를 함유한 양이온성 고분자 나노 섬유는 양이온성 고분자 나노 섬유의 회수가 매우 용이하다는 장점을 갖는다. 그리고 만들어진 은 나노 입자를 함유한 양이온성 고분자 나노 섬유는 기존의 은 나노 입자를 함유한 고분자 나노 섬유보다 더욱 향상되고 지속적인 항균 효과를 나타낼 수 있다.
Abstract:
PURPOSE: A manufacturing method of titanium oxide/polymer core/shell nanoparticle is provided to manufacture massively titanium oxide/polymer core/shell nanoparticle through a photopolymerization using only the ultraviolet ray without using additional initiator. CONSTITUTION: The manufacturing method of titanium oxide/polymer core/shell nanoparticle includes following steps.(a) The titanium oxide nanoparticle is dispersed into a solvent.(b) A monomer is injected into the solvent with 'the dispersed titanium oxide'. A physical adsorption of the monomer is induced in the surface of the titanium oxide nanoparticle.(c) The ultraviolet ray is added to the surface of the titanium oxide nanoparticle with the adsorbed monomer. In the surface, a production of electrons and radicals is induced. In the surface, the polymerization of the monomer radical is induced.(d) The titanium oxide/polymer core/shell nanoparticle is collected from the polymerized solution through a precipitation.
Abstract:
PURPOSE: A manufacturing method of cationic polymer nano fiber containing silver nano particles is provided to contain silver particles in cationic polymer nano fiber by manufacturing the silver nano particles and cationic polymer nano fiber at the same time with a process without a pre-process of silver nano particles or multiple additional stages. CONSTITUTION: A manufacturing method of cationic polymer nano fiber comprises the steps of: (i) melting silver ions by a strong magnetic mixing; (ii) inducting reduction of the silver ions by putting a radical initiator in the aqueous solution; (iii) polymerizing a monomer on the surface of the silver nano particles by introducing the monomer in the aqueous solution; and (iv) collecting cationic polymer nano fiber containing siver nano particles from the polymeric composition.
Abstract:
PURPOSE: A producing method of silica/polyrhodanine core-shell nanoparticle using the dispersion polymerization is provided to easily obtain polyrhodanine from the surface of a silica nanoparticle. CONSTITUTION: A producing method of silica/polyrhodanine core-shell nanoparticle comprises the following steps: dispersing silica into a solvent, and adding an initiator into the solvent for absorbing the initiator to the surface of the silica; drying silica nanoparticles absorbed with the initiator, and dispersing into another solvent; injecting a rhodanine monomer into the solvent containing the silica nanoparticles absorbed with the initiator for inducing the polymerization on the surface of the silica; and precipitating the solvent for collecting the silica/polyrhodanine core-shell nanoparticle.
Abstract:
PURPOSE: An one-pot fabrication method of silver nanoparticles embedded polypyrrole nanotubes is provided to obtain silver nanoparticles embedded polypyrrole nanotubes using silver ions as the oxidizer of chemical oxidation polymerization. CONSTITUTION: A fabrication method of polypyrrole nanotubes includes the following steps of: arranging an anodic aluminum oxide template in a silver cation and iron cation solution, and absorbing silver cations and iron cations on the anodic aluminum oxide template; polymerizing pyrrole monomer on the anodic oxide template by vapor deposition; reducing silver ions from the anodic aluminum oxide template, and generating silver nanoparticles; generating polypyrrole by the chemical oxidation polymerization of the pyrrole monomer; removing the anodic oxide aluminum template, washing the anodic oxide aluminum template with methanol, and collecting polypyrrole nanotubes containing silver nanoparticles.
Abstract:
PURPOSE: A mobile communication terminal, a store management server, a shopping service system using a server smart card and a shopping service providing method are provided to enable a mobile communication terminal user to transmit desired information to a store management server, thereby purchasing the product. CONSTITUTION: An information input unit(201) receives an input of an image information about a product. An information transmitting unit(203) transmits the image information to a store management server. A list information receiving unit(205) receives shopping product list information corresponding to the image information from the store management server. A purchasing requesting unit(207) transmits a purchase request information about at least one among products in the shopping product list to a store management server.
Abstract:
PURPOSE: A manufacturing method of titanium oxide/polymer core/shell nanoparticle is provided to manufacture massively titanium oxide/polymer core/shell nanoparticle through a photopolymerization using only the ultraviolet ray without using additional initiator. CONSTITUTION: The manufacturing method of titanium oxide/polymer core/shell nanoparticle includes following steps.(a) The titanium oxide nanoparticle is dispersed into a solvent.(b) A monomer is injected into the solvent with 'the dispersed titanium oxide'. A physical adsorption of the monomer is induced in the surface of the titanium oxide nanoparticle.(c) The ultraviolet ray is added to the surface of the titanium oxide nanoparticle with the adsorbed monomer. In the surface, a production of electrons and radicals is induced. In the surface, the polymerization of the monomer radical is induced.(d) The titanium oxide/polymer core/shell nanoparticle is collected from the polymerized solution through a precipitation.
Abstract:
PURPOSE: A method for preparing polycation nano particles using vapor deposition polymerization is provided to easily obtain polycation particles in nano sizes based on simple polymerization conditions. CONSTITUTION: The surface of silica nano particles is modified into hydrophobic. A radial initiator is added to the surface of modified silica nano particles is decompressed. A cation monomer is added to the silicon nano particles in which the initiator is added. The monomer is vaporized by increasing temperature. The polymerization of the monomer on the surface of the silicon nano particles is induced. Polycation nano particles are collected.
Abstract:
The present invention relates to a method of manufacturing a graphene nano-composite having an urchin-like copper oxide therein by using a simple hydrothermal synthetic method under normal pressure, and provides a method of manufacturing an urchin-like structure made of nanometer size needles through a chemical reaction while stirring copper acetate at a high temperature by using graphene oxide as a stabilizer and a mold. The nano-composite manufactured thereby exhibits an excellent antibacterial property against Staphylococcus, which is a gram positive bacillus, and E. coli, which is a gram negative bacillus, which is caused by the copper oxide nano-structure having a large surface area. According to the present invention, a copper oxide nano-structure having an excellent antibacterial property is easily manufactured by a hydrothermal synthetic method, and has an advantage of being manufactured at an economic manufacturing cost and a simple reaction condition.