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    • 5. 发明授权
    • 탄소나노튜브가 함유된 폴리술폰 지지체를 이용한 폴리아미드 역삼투막 및 그 제조방법
    • 使用含有碳纳米管的聚砜支撑材料的聚酰亚胺反渗透膜及其制造方法
    • KR101250310B1
    • 2013-04-03
    • KR1020120095296
    • 2012-08-30
    • 한국수자원공사경남대학교 산학협력단한양대학교 산학협력단
    • 배상식이상철김영철김지웅정창희임재림이경혁이영주김승현민충식김치성박호범
    • B01D69/12B01D61/02B01D71/56B01D71/02
    • Y02A20/131B01D69/12B01D61/025B01D69/141B01D71/021B01D71/56C02F1/441C02F2103/08
    • PURPOSE: A polyamide reverse osmosis membrane and a manufacturing method thereof using a polysulfone support having a multi-walled carbon nanotube are provided to use a polysulfone support with a polysulfone membrane containing a carbon nanotube and maintaining a chemical tolerance and mechanical properties identical to the properties of an existing membrane, thereby maintaining a salt rejection rate and improving permeable behaviors compared with an existing reverse osmosis membrane using the polysulfone support. CONSTITUTION: A manufacturing method for a polyamide reverse osmosis membrane includes: a step(S100) of opening the terminal portion of a multi-walled carbon nanotube with heat treatment in order to improve an unstable terminal portion structure of the multi-walled carbon nanotube such as a pentagonal ring or a heptagonal ring; a step(S200) of surface-treating the multi-walled carbon nanotube, of which the terminal portion is open, with a nonionic surfactant in order to increase the dispersive properties of the multi-walled carbon nanotube against an organic solvent; a step(S300) of manufacturing a polysulfone solution added with the surface-treated multi-walled carbon nanotube into a polysulfone membrane containing the multi-walled carbon nanotube using a nonsolvent-induced phase separation method; and a step(S400) of impregnating an M-phenylenediamine aqueous solution and a trimesoyl chloride organic solution using the polysulfone membrane as a support, and drying the polysulfone membrane to manufacture the polyamide reverse osmosis membrane. [Reference numerals] (AA) Start; (BB) End; (S100) Step of opening the terminal portion of a MWCNT(Multi-walled Carbon Nanotube) with heat treatment in order to improve the unstable terminal portion structure of the multi-walled carbon nanotube such as a pentagonal ring or a heptagonal ring, where the MWCNT is used as a flow path for reducing the resistance of a polysulfone support in a reverse osmosis membrane; (S200) Step of surface-treating the MWCNT of which the terminal portion is opened using a nonionic surfactant in order to increase the dispersive property of the MWCNT against an organic solvent; (S300) Step of manufacturing a polysulfone solution added with the surface-treated MWCNT into a polysulfone membrane containing the MWCNT using a nonsolvent-induced phase separation method; (S400) Step of impregnating the polysulfone membrane containing the MWCNT as a support in an MPD aqueous solution and a TMC organic solution, and then drying to manufacture the polyamide reverse osmosis membrane;
    • 目的:提供聚酰胺反渗透膜及其使用具有多壁碳纳米管的聚砜载体的制造方法,以使用具有含有碳纳米管的聚砜膜的聚砜载体,并保持与性能相同的化学耐受性和机械性能 的现有膜,从而与使用聚砜载体的现有反渗透膜相比,保持了脱盐率和改善渗透性能。 构成:聚酰胺反渗透膜的制造方法包括:通过热处理打开多壁碳纳米管的末端部分的步骤(S100),以改善多壁碳纳米管的不稳定的末端部分结构,如 作为五角环或七角环; 为了提高多壁碳纳米管相对于有机溶剂的分散性,用非离子表面活性剂表面处理末端部分开放的多壁碳纳米管的步骤(S200) 使用非溶剂诱导相分离方法将表面处理的多壁碳纳米管加入到含有多壁碳纳米管的聚砜膜中的聚砜溶液的步骤(S300) 和使用聚砜膜作为载体浸渍间苯二胺水溶液和均苯三酰氯有机溶液的步骤(S400),并干燥聚砜膜以制造聚酰胺反渗透膜。 (附图标记)(AA)开始; (BB)结束; (S100)通过热处理来打开MWCNT(多壁碳纳米管)的端子部分的步骤,以改善五壁环或七角环等多壁碳纳米管的不稳定末端部分结构,其中 MWCNT用作用于降低反渗透膜中聚砜载体的电阻的流动路径; (S200)为了提高MWCNT相对于有机溶剂的分散性,使用非离子表面活性剂对末端部分开孔的MWCNT进行表面处理的步骤; (S300)使用非溶剂诱导相分离方法将加成表面处理的MWCNT的聚砜溶液制造成含有MWCNT的聚砜膜的工序; (S400)将含有MWCNT的聚砜膜作为载体浸渍在MPD水溶液和TMC有机溶液中,然后干燥以制造聚酰胺反渗透膜;