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:
Disclosed is a solid state dye-sensitized solar cell employing a composite polymer electrolyte, which includes a photoelectrode, a counter electrode, and an electrolyte interposed between the photoelectrode and counter electrode. The electrolyte includes at least one of a middle molecular substance, a polymer mixture, and inorganic nanoparticles, and a redox derivative. The dye-sensitized solar cell reduces crystallinity of the polymer electrolyte to significantly increase ionic conductivity, and enables the polymer electrolyte to smoothly permeate into a titanium oxide layer to improve mechanical properties, thereby significantly increasing energy conversion efficiency. Accordingly, the dye-sensitized solar cell assures high energy conversion efficiency without an electrolyte leak, and thus, it can be stably and practically used for a long time.
Abstract:
본 발명은 즈비터 이온성 은 화합물을 주성분으로 한 올레핀/파라핀 분리용 촉진수송 분리막에 관한 것이다. 올레핀 또는 디엔계 탄화수소를 파라핀계 탄화수소와 분리하기 위한 본 발명의 촉진수송 분리막은, 올레핀이나 디엔과 가역적으로 착체 (complex)를 형성할 수 있는 즈비터 이온성 은 화합물이 단독 또는 고분자와 혼합된 용액을 다공성 지지체 위에 코팅시켜 제조한다. 이렇게 제조된 촉진 수송 분리막내에 존재하는 은 이온은 설포네이트 (SO 3 ) 기에 강하게 결합되어 있어 불순물이나 빛에 의해 거의 환원되지 않기 때문에 분리막의 안정성이 크게 향상될 수 있어 올레핀이나 디엔계 탄화수소에 대한 투과성과 선택성이 높고 장시간의 운전상황에서도 초기의 활성을 오랫동안 지속하는 특성을 나타낸다.
Abstract:
PURPOSE: A crosslinked irreversible chemical gel film-type ion exchange membrane, its preparation method and a fuel cell containing the ion exchange membrane are provided, to reduce the effect of moisture and methanol on the hydrogen ion conductivity, to reduce the thickness and to improve the ion conductivity. CONSTITUTION: The ion exchange membrane is such that its crosslinking point is formed by the crosslinking reaction of a structural unit A selected from the groups represented by the formulas 1 and 2, and it comprises a structural unit B selected from the groups represented by the formula 3 or ArR7, wherein R1 to R5 are independent each another and are H, a phenyl group, an alkyl group of C1-C4, an alkylene group of C1-C4, an alkynyl group of C1-C4, a nitrile group or a functional group capable of inducing the condensation independently(i.e. epoxy, cyanate, ester and halogen); R6 is H or an alkyl group of C1-C4; Ar is a substituted or unsubstituted phenyl group(wherein the substituent is a phenyl group, an alkyl group of C1-C4, an alkylene group of C1-C4, or an alkynyl group of C1-C4); and R7 is -SO3H, -COOH or -P(O)(OR8)OH(wherein R8 is H or an alkyl group of C1-C4).
Abstract:
본 발명은 분리능이 있는 수소 이온 교환 복합막, 복합 용액, 그 제조방법 및 이를 포함하는 연료전지에 관한 것으로서, 본 발명에 따른 이온 교환 복합막은 배리어 물질인 클레이 또는 유기화된 유기 클레이가 이온 전도성 고분자 필름에 분산되어 있는 구조를 갖고 있다. 이러한 이온 교환 복합막은 메탄올을 선택적으로 차단하면서도 수소 이온의 확산에 큰 저하가 없으며, 또한 비용면에서도 유리한 장점을 가지고 있다. 따라서, 본 발명의 이온 교환 복합막은 메탄올을 연료로 하는 직접 메탄올 연료전지에 유용하게 사용될 수 있다.
Abstract:
PURPOSE: A polymer separation membrane containing silver salt is provided to promote transfer of olefin in order to keep a performance of the membrane and increase stability thereof even though the membrane is used for a long time. CONSTITUTION: The separation membrane comprises polymer, silver salt and a phthalate compound having a chemical formula (wherein R is alkyl or phenyl group having C2-C8) to separate olefin/paraffine and promote transfer thereof. The polymer may have hetero type atoms containing pairs of non-covalent electrons in main chains. The silver salt is contained in an amount equal to 0.5-3 times of numbers of moles of monomers to form the polymer. The silver salt is selected from a group consisting of AgBF4, AgPF6, AgSO3CF3, AgClO4 and AgSbF6. The phthalate compounds are able to be included in the membrane in an amount of 0.05-10wt.% based on total weight of the polymer.
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: A solid polymer electrolyte facilitated transport membrane for use in the separation of alkene hydrocarbons from thermal-cracking products of naphthalene is provided, which is characterized in that non-volatile surfactants are added in solid polymer electrolyte facilitated transport membrane to improve long term operation stability. CONSTITUTION: The solid polymer electrolyte facilitated transport membrane is prepared by coating a solid polymer electrolyte layer comprising (i) transition metal salts selectively and reversibly reactable with alkenes; (ii) non-volatile polymer; and (iii) surfactants on the surface of a porous support. Transition metal ions react with non-volatile polymer ligand to form complex, and double bond of alkenes selectively and reversibly react with transition metal ions of the complex so that it is possible to separate only alkene hydrocarbons from alkene/alkane hydrocarbons.
Abstract:
PURPOSE: Provided are an inorganic-polymer composite material attached with nano particles on its surface by using dendrimer, in which inorganic nano particles are well dispersed on surface of polymer material without permanent cohesion, and a method for producing the same. CONSTITUTION: The method comprises the steps of (i) forming an anhydride reactor on a matrix of polymer material; (ii) selectively adding either of metal or inorganic salt to dendrimer, to form either of dendrimer-metal precursor solution or dendrimer-inorganic particles solution; (iii) reacting the matrix with the either solution to chemically combine with each other; and (iv) irradiating the combined product to reduce metal or inorganic particle ion. The matrix is a polymer film having anhydride functionality attached by plasma treating the polymer film in the presence of maleic anhydride.