Abstract:
PURPOSE: An anti-fouling organic/inorganic composite compound is provided to obtain an antifouling membrane having excellent anti-fouling performance, to extend life and reduce maintenance costs of a membrane such as cleaning costs. CONSTITUTION: An anti-fouling organic/inorganic composite compound comprises an anti-fouling organic/inorganic composite compound, a core formed of polyhedral oligomeric silsesquioxane, and an arm connected to at least one Si of the polyhedral oligomeric silsesquioxane. A manufacturing method of an anti-fouling membrane comprises: a step of preparing a solution which comprises the organic/inorganic composite compound and a solvent; a step of forming a surface layer by spreading the solution on the surface of a membrane which requires anti-fouling surface treatment.
Abstract:
온도감응성 및 이온성을 갖는 고분자 및 이를 이용한 정삼투용 유도 용액이 제공된다. 상기 온도감응성 및 이온성을 갖는 고분자는 온도감응성 단량체와 이온성 단량체의 중합에 의해 제조될 수 있다. 상기 정삼투용 유도 용액은 상기 온도감응성 및 이온성을 갖는 고분자를 포함하는 고분자 수용액일 수 있다. 상기 고분자는 낮은 온도 범위에서 하한 임계 용액 온도를 가질 수 있으므로 분리 및 회수가 용이하다. 또, 상기 고분자는 고분자 수용액 내에서 높은 삼투압을 유발할 수 있다. 따라서, 상기 고분자는 정삼투용 유도 용액에 적합하다.
Abstract:
Provided is an inducing solution for forward osmosis using thermoresponsive and ionic polymer. The inducing solution for forward osmosis is a high molecular solution containing high molecules prepared by polymerization of a thermo-sensitivity monomer and an ionic monomer, and the high molecules have thermo-sensitivity representing lower critical solution temperature behavior by the thermo-sensitivity monomer, and ionic characteristics by the ionic monomer.
Abstract:
본 발명은 광 조사를 통한 액정과 광경화성 단분자 혼합물의 수직 배향을 이용한 액정 표시 장치 및 그 방법에 관한 것으로, 액정 속에 소량의 광경화성 단분자를 혼합하고 광을 조사하여 상분리된 고분자 박막의 형성을 통하여 액정 분자들을 수직으로 배향하는 광 조사를 통한 액정과 광경화성 단분자 혼합물의 수직 배향을 이용한 액정 표시 장치 및 그 방법에 관한 것이다. 일면에 투명 전극이 각각 형성되는 제1기판과 제2기판의 상기 투명 전극 형성부가 서로 마주보도록 구비되며, 상기 제1,2기판은 내부에 공간이 형성되도록 봉합제로 일정한 간격으로 합착되고, 상기 공간에는 액정 물질과 중합체가 섞여 있는 계를 포함한다. 따라서, 본 발명의 수직 배향 방식은 균일한 수직 배향 능력, 뛰어난 안정성을 지니고 있어 액정 표시 장치의 성능을 향상시킬 수 있으며, 기존에 사용되어오던 폴리이미드계 배향막을 형성하는데 필요한 여러 공정과 러빙 공정을 수행하지 않고서도 안정성이 뛰어나며 우수한 수직 배향 특성을 유도하는 효과가 있다.
Abstract:
Provided are a thermoresponsive and ionic polymer and a draw solution for forward osmosis using the same. The thermoresponsive and ionic polymer can be manufactured by a polymerization of thermoresponsive monomers and ionic monomers. The draw solution for forward osmosis can be a polymer solution comprising the thermoresponsive and ionic polymer. The polymer can have lower critical solution temperature at low temperature range thereby being easily isolated and collected. In addition, the polymer is able to induce high osmotic pressure in a polymer aqueous solution. Therefore, the polymer is suitable for a draw solution for forward osmosis.
Abstract:
Provided are semi-permeable film having polyhedral oligomer silsesquioxane derivatives dispersed in a polymer matrix, a method for manufacturing the same, a separation membrane including the semi-permeable film, and a water treatment apparatus including the separation membrane. According to an embodiment of the present invention, provided is a semi-permeable film having polyhedral oligomer silsesquioxane derivatives dispersed in a polymer matrix, and permeating water and not permeating salts. Provided in an embodiment of the present invention is a semi-permeable film having increased selectivity and permeability.
Abstract:
PURPOSE: An organic/inorganic composite compound is provided to provide a film with excellent staining resistance even through the film is hydrophilic. CONSTITUTION: An organic/inorganic composite compound comprises a core which is formed of a polyhedral oligomer silsesquioxane; and an arm which is connected to at least one Si of the polyhedral oligomer silsesquioxane. The arm comprises a vinyl-based first structure unit which comprises at least one ethylenoxide group in a side chain thereof; and an oleophobic vinyl-based second structure unit containing a silicon group in a side chain thereof. The atomic ratio of SI to -Si-O-Si couplings which form the polyhedral oligomer silsesquioxane is 1:1-3/2.
Abstract:
PURPOSE: A temperature-sensitive copolymer provides a solution which has high osmotic pressure and low backward diffusion of solute and of which the solute can be easily recovered and collected. CONSTITUTION: A temperature-sensitive copolymer comprises a first repeating unit in which a temperature-sensitive oligomer is grafted; and a second repeating unit including an ionic moiety and the counter ion of the ionic moiety. The temperature-sensitive oligomer is an oligomer including a repeating unit derived from an unsaturated monomer which has a moiety represented by chemical formula 1: *-C(=O)N(R2)(R3) or a moiety represented by chemical formula 2 or an oligomer including a repeating unit derived from a heterocyclic compound which contains C, N, and O in the ring and has C=N bonds.