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:
Provided is a cleaning composition that is used to remove a contaminant from a membrane, and contains micropores and a structure which is reformed so that surfaces inside the micropores have pH responsive residues at least in an end section thereof. The composition contains an acidic compound and a polyelectrolyte, and the acidic compound adjusts the pH of the composition so that the polyelectrolyte is ionically coupled with the pH responsive residues.
Abstract:
The present invention provides a method for selectively modifying a structure having nanopores which provides a structure having penetration pores of nanosize; fills the pores with surfactants; exposes a part of the inner surface of the pores by removing the part of the surfactants from both ends of the pores; modifies the exposed inner surface with a first compound; exposes the inner surface of the pores which are not modified with the first compound by removing the surfactants remaining in the pores; and modifies the exposed inner surface with a second compound different from the first compound which is not modified with the first compound.
Abstract:
나노다공체(nanoporous material)와 고분자 매트릭스를 포함하는 반투성 필름을 제공한다. 상기 나노다공체는 나노기공성 코어(nanoporous core) 및 상기 나노기공성 코어의 표면에 코팅된 금속 수산화물, 금속 산화물 및 이들의 조합에서 선택되는 입자를 포함하는 코팅층을 포함한다. 또한 상기 반투성 필름을 분리막 및 이의 제조방법이 제공된다.
Abstract:
PURPOSE: A semi-permeable film is provided to have high selectivity and permeability and to have excellent elution rate-improving performance. CONSTITUTION: A semi-permeable film(100) comprises a nanoporous body(101), a polymer matrix(103)a separator. The nanoporous body includes a nanoporous core, and a coating layer coated on the surface of the nanoporous core. The coating layer includes a particle selected from a metal hydroxide, metal oxide, and combinations thereof. The nanoporous core is selected from zeolite, hydrotalcite, kaolinite, mellite, montmorillonite, saponite, and a combination thereof. The nanoporous body includes nanopore with an average pore size of 0.3-1.2 nm.