Abstract:
PURPOSE: A method is provided to easily control the size of a pore and to reduce the distribution of the pore size as well as to improve the permeability and the mechanical intensity by fixing the structure of a high molecular solution with the physical gelation of the high molecular solution. CONSTITUTION: An asymmetric support membrane is produced by the steps of: preparing a high molecular solution by dissolving 15-35wt% of a high molecule on the basis of total weight of a high molecular solution in a single main solvent for changing a high molecular solution into physical gel or in a mixed solvent adding a co-solvent to the main solvent; and producing an asymmetric support membrane by inducing phases to be separated through the deposition of the prepared high molecular solution in water after physically gelating the solution by forming the solution in the final membrane. The high molecule is selected from a group consisting of poly vinyl chloride, polyether sulfone, polyether imide and polyamic(methylester).
Abstract:
하기 화학식 1로 표시되는 반복 단위를 갖는 폴리아미드 고분자로부터 제조된, 폴리아미드 분리막 및 이를 이용한 기체 혼합물의 분리 방법이 기술되어 있다. 본 발명에 따른 폴리아미드 분리막은 자유 부피가 크고 분자 운동이 제한되어 있어 투과도 및 선택 투과도 등의 유체 투과 특성이 우수하다. [화학식 1]
상기 식중, R은 디카르복실산 또는 디카르복실산 할라이드로부터 도입된 지방족 또는 방향족 유기기이다.
Abstract:
PURPOSE: A preparation method of an asymmetric membrane and the asymmetric membrane are provided, which can prepare asymmetric membrane having excellent mechanical intensity and gas selectivity by using chemical gelation. CONSTITUTION: The preparation method contains the steps of; (i) preparing polymer solution by mixing 15-35 wt% of chemical gelated polymer by ultraviolet rays and 65-85 wt% of solvent that doesn't absorb the light having wavelength of ultraviolet ray; (ii) chemically gelating the polymer solution by irradiating the ultraviolet ray; and (iii) preparing the asymmetric membrane by dipping chemically gelated polymer solution to water as nonsolvent and separating phase.
Abstract:
PURPOSE: A facilitated transport membrane using solid polymer electrolyte is provided, which can separate selectively hydrocarbon of alkene series by forming complex of polymer ligand and metal ion of metal salt which is present in polymer electrolyte and non-volatile polymer and by promoting transportation of alkene that is caused by selective and reversible reaction of double bond of alkene and metal ion, the system being suitable for actual process of alkene/alkane separation. CONSTITUTION: The membrane is a complex separation membrane which is composed of transition metal salt that can react selectively and reversibly with alkene and non-volatile polymer and consists of polymer electrolyte layer that is solid state at operating temperature and porous supporting membrane, the selective permeability expressed by the square of pure alkene permeability/pure alkane permeability for hydrocarbon mixture feed to be separated being 100GPU (10¬-4 cm3(STP) per cm2 sec cm Hg).
Abstract translation:目的:提供使用固体高分子电解质的促进输送膜,通过形成聚合物配体与聚合物电解质和非挥发性聚合物中存在的金属盐的金属离子和通过促进烯烃的输送,选择性地分离烯烃系的烃 这是由烯烃和金属离子双键的选择性和可逆反应引起的,该系统适用于烯烃/烷烃分离的实际工艺。 构成:膜是一种复杂的分离膜,由过渡金属盐组成,可以与烯烃和非挥发性聚合物选择性和可逆反应,由在操作温度下为固态的聚合物电解质层和多孔支撑膜组成,选择性渗透率 由待分离的烃混合物进料的纯烯烃渗透性/纯烷烃渗透性的平方表示为100GPU(每cm 2 sec cm Hg为10 -4 cm 3(STP))。
Abstract:
본 발명은 폴리아믹산 용액을 비용매에 침지시켜 상분리법으로 분리막을 제조한 다음 이를 고온에서 이미드화 하여 폴리이미드 분리막을 제조함에 있어서, 상기 폴리아믹산 용액을 비용매에 침지 시키기 전에 가열처리하여 부분적으로 이미드화 시킴을 특징으로하는 비대칭형 폴리이미드 분리막의 제조방법에 관한 것이다. 본 발명은 상분리법으로 분리막을 제조하는 시간을 단축할 수 있어 생산성이 향상된다. 아울러 본 발명은 이미드화율 조절로 막의 구조를 비대칭구조 등으로 형성할 수 있고, 분리막의 내용매성도 향상 시킬 수 있다.
Abstract:
PURPOSE: Provided is a polymer membrane or film, having many reactive groups, produced by a plasma method or a UV irradiation method, which can be applied to a chemical sensor, a liquid- or gas-phase adsorption membrane, a separation membrane, or a lithography process. CONSTITUTION: The polymer membrane or film having many reactive groups is produced by covalent-bonding a dendritic polymer having many reactive groups to the polymer membrane or film by the plasma treatment in the presence of air or maleic anhydride or covalent-bonding a dendritic polymer not having reactive groups or a star-shaped polymer to the polymer membrane or film by the plasma treatment in the presence of the maleic anhydride, introducing an azide group, and then performing the UV irradiation. The terminal reactive group of the dendritic polymer is at least one selected from the group consisting of amine, carboxy, carboxylic ester, epoxy, isocyanate, hydroxy, and sulfhydryl.
Abstract:
본 발명은 고분자 및 용매로 이루어진 고분자 용액을 비용매에 침지시켜 상분리법에 의해 비대칭 지지막을 제조하는 방법에 있어서, 1) 고분자 용액의 총 중량을 기준으로 15-35 중량%의 고분자를 고분자 용액이 0-50 ℃에서 물리적 겔이 되는 주용매 단독이나 또는 이 주용매에 공용매를 첨가한 혼합 용매에 용해시켜 고분자 용액을 제조하는 단계, 및 2) 상기 1) 단계에서 제조된 고분자 용액을 최종 막의 형태로 제조하여 물리적으로 겔화시킨 후 비용매인 물에 침지시켜 상분리를 유도하여 비대칭 지지막을 제조하는 단계를 포함하는 것을 특징으로 하는 비대칭 지지막의 제조 방법 및 이로부터 제조된 기공의 크기 분포도가 좁고, 투과성 및 기계적 강도가 개선된 비대칭 지지막에 관한 것이다. 본 발명에 따른 방법으로 제조된 비대칭 지지막은 스폰지 형태의 다공성 지지막으로서 기공들이 서로 연결된 열린 기공으로 이루어지고 그 기공의 크기 분포도가 좁은 우수한 구조를 갖고 있다. 따라서, 본 발명에 따른 비대칭 지지막은 투과성과 기계적 강도가 향상되고, 나아가 물질 선택성이 높은 소재로 코팅하는데 있어서 기공 크기의 분포도가 좁아 코팅 공정을 최적화할 수 있어 선택도까지 개선된 복합막을 쉽게 제조할 수 있다.
Abstract:
PURPOSE: A method is provided to produce an asymmetrical supporting membrane improved the transmission and the mechanical intensity from a polyimide by controlling the diffusing speed of a high molecular solution. CONSTITUTION: A high molecular solution is produced by melting the 15-25wt% polyimide standardized on the whole weight of the high molecular solution into a mixed solvent, which comprises of a main solvent whose mixed heat with water as a non-solvent is endothermic and a co-coolant whose mixed heat with the non-solvent is exothermic, and whose mixed heat with the non-solvent is endothermic when the main solvent and the co-coolant are mixed. An asymmetrical membrane is produced by immersing a membrane produced by phase-separating the high molecular solution in water. Because the asymmetrical membrane composed of a pore opened a sponge-typed porous supporting layer is produced by using the mixed solvent whose mixed heat with the non-solvent is endothermic, the penetrating property and the mechanical intensity are improved, and a composite membrane having the improved selectivity is produced by forming a thin coated membrane thereon.