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Reverse osmosis membrane comprising silver nanowire layer, and preparation method thereof

一种反渗透膜、银纳米线的技术，应用在逆渗透、半透膜分离、化学仪器和方法等方向，能够解决很难获得银本征效应等问题，达到脱盐率和渗透流率优异、改善表面特征、优异防污性和耐氯性的效果

Active Publication Date: 2014-01-01
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, in the case of reverse osmosis membranes, the silver nanoparticles are not exposed or manifested on the outside of the polyamide film, and it is difficult to obtain the intrinsic effect of silver

Method used

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  • Reverse osmosis membrane comprising silver nanowire layer, and preparation method thereof
  • Reverse osmosis membrane comprising silver nanowire layer, and preparation method thereof
  • Reverse osmosis membrane comprising silver nanowire layer, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Polysulfone having a solid content of 18 wt % was put into a DMF (N,N-dimethylformamide) solution and dissolved at a temperature equal to 80° C. for 12 hours or more to obtain a uniform liquid phase. The solution was cast on a nonwoven fabric made of polyester material with a thickness of 95 μm to 100 μm to have a thickness of 45 μm to 50 μm to form a porous polysulfone support.

[0053] Immerse the porous polysulfone support body formed according to the aforementioned method in an aqueous solution containing 2wt% m-phenylenediamine and 0.001wt% silver nanowires for 2 minutes, take it out, and use a 25psi rolling machine to remove excess aqueous solution on the support body, And dry the support at room temperature for 1 minute.

[0054] Afterwards, the support was immersed in a 0.1 wt% organic trimesoyl chloride solution using ISOL-C (SK Chem.) solvent for 1 minute, taken out, and dried in an oven at a temperature of 60° C. for 10 minutes. Thereafter, the support was w...

Embodiment 2

[0056] A reverse osmosis membrane was prepared in the same manner as in Example 1 except that the content of silver nanowires was 0.005 wt%.

Embodiment 3

[0058] A reverse osmosis membrane was prepared in the same manner as in Example 1 except that the content of silver nanowires was 0.01 wt%.

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Abstract

The present invention provides a reverse osmosis membrane comprising: a porous support; a silver nanowire layer formed on the porous support; and a polyamide film formed on the silver nanowire layer, on one side, and a preparation method thereof.

Description

technical field [0001] The present invention relates to a reverse osmosis membrane and a preparation method thereof, and more particularly, to a reverse osmosis membrane comprising a silver nanowire layer interposed between a support and a polyamide film. Background technique [0002] The phenomenon that the solvent passes through the isolation membrane from the solution with low solute concentration to the solution with high solute concentration between the two solutions separated by the semipermeable membrane is called osmosis. Here, due to the movement of the solvent acting on the solution with high solute concentration The pressure is called osmotic pressure. In this case, when an external pressure higher than the osmotic pressure is applied, the solvent moves towards a solution with a lower solute concentration, a phenomenon known as reverse osmosis. Based on the principle of reverse osmosis, various salts or organic substances can be separated from the solution by usi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/02B01D69/12B01D71/56
CPCB01D67/0006B01D69/12B01D71/022B01D67/0088B01D2323/40B01D69/125B01D69/141B01D69/10B01D71/56B01D2325/20B01D61/025B01D69/1071B01D69/1216B01D69/1213B01D2325/04B01D2323/12B01D69/1251
Inventor 金宰弘李弼李暎周申程奎
Owner LG CHEM LTD
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