SEPARATION FILM, MANUFACTURING METHOD OF THE SAME, AND CLEANING METHOD OF THE SAME

• Main Authors: TADA YASUHIKO, SAKUMA HIROTAKA, SUMIKURA MISAKI
• Format: Patent
• Language: English; Japanese
• Published: 17.08.2023
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

To provide a separation film which is excellent in water permeability.SOLUTION: A separation film 10 includes: a matrix layer 12 having first holes 14 which penetrate through the matrix layer 12 in a thickness direction; a graphene oxide layer 13 in which adjacent unit layers of multiple unit layers formed of graphene oxide are bridged at least along the thickness direction and which has second holes 15 penetrating through the graphene oxide layer 13 in the thickness direction in a manner that the second holes 15 overlap with the first holes 14; and a support 11. A space between the adjacent unit layers is smaller than or equal to a diameter of one, which has a smaller diameter, of the first hole 14 and the second hole 15.SELECTED DRAWING: Figure 1 【課題】透水性に優れた分離膜を提供する。【解決手段】分離膜１０は、厚さ方向に沿って貫通する第１孔１４を有するマトリクス層１２と、酸化グラフェンにより構成される複数の単位層のうち隣接する前記単位層同士が少なくとも前記厚さ方向に沿って架橋されるとともに、前記厚さ方向に沿って貫通する第２孔１５を、第１孔１４と重なるように有する酸化グラフェン層１３と、支持体１１とを含む。隣接する前記単位層同士の間隔は、第１孔１４又は第２孔１５のうちの小さな径を有する孔の径以下である。【選択図】図１