Anti-pollution separation net as well as preparation method and application thereof

An anti-pollution and net-separation technology is applied in chemical instruments and methods, textiles and papermaking, general water supply conservation, etc. It can solve problems such as unfavorable, reduced antibacterial performance of the net, weakened bacterial activity, etc., and achieves strong self-cleaning ability, Effect of low feed side pressure drop

Active Publication Date: 2022-08-09
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disclosed separation net will weaken the activity of the bacteria, which is extremely unfavorable for the process of biological fermentation coupling membrane separation, and the leaching of silver ions will reduce the antibacterial performance of the separation net.

Method used

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  • Anti-pollution separation net as well as preparation method and application thereof
  • Anti-pollution separation net as well as preparation method and application thereof
  • Anti-pollution separation net as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] This embodiment provides an anti-pollution screen, the schematic diagram of which is as follows: figure 1 As shown, the anti-pollution separator includes a polypropylene separator 1, and an anti-pollution polymer brush disposed on the surface of the separator;

[0104] The anti-pollution polymer brush includes a poly-N-isopropylacrylamide temperature-sensitive polymer brush 2, and a poly-2-(perfluoropolymer) grafted on the end of the poly-N-isopropylacrylamide temperature-sensitive polymer brush. Octyl) ethyl methacrylate polymer brush 3;

[0105] The poly-N-isopropylacrylamide thermosensitive polymer brush is in direct contact with the separator.

[0106] The anti-pollution screen is prepared by the following method, and the method includes the following steps:

[0107] (1) dissolve 7g of ammonium persulfate in 30mL of deionized water, and configure to obtain 18.9% ammonium persulfate solution;

[0108] Place 0.2 g of polypropylene separator (taken from a new roll-t...

Embodiment 2

[0122]This embodiment provides an anti-pollution screen, which is different from Embodiment 1 in that the poly-N-isopropylacrylamide temperature-sensitive polymer brush is a polydimethylaminoethyl methacrylate brush; the preparation method thereof is the same as The difference of Example 1 is that the N-isopropylacrylamide in step (3) is replaced with an equimolar amount of dimethylaminoethyl methacrylate.

Embodiment 3

[0124] This embodiment provides an anti-pollution screen, which is different from Embodiment 1 in that the poly-N-isopropylacrylamide temperature-sensitive polymer brush is a polyethylene glycol monomethyl ether methacrylate brush; its preparation The difference between the method and Example 1 is that the N-isopropylacrylamide in step (3) is replaced with an equimolar amount of ethylene glycol monomethyl ether methacrylate.

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Abstract

The invention relates to an anti-pollution separation net as well as a preparation method and application thereof. The anti-pollution separation net comprises a separation net and an anti-pollution polymer brush arranged on the surface of the separation net, the anti-pollution polymer brush comprises a temperature-sensitive hydrogel polymer brush and a fluorine-containing polymer brush grafted to the tail end of the temperature-sensitive hydrogel polymer brush. And the thermo-sensitive hydrogel polymer brush is in direct contact with the separation net. The anti-pollution separation net has good anti-pollution capacity for organic pollutants and biological pollutants and temperature response self-cleaning capacity, and meanwhile has a fluid drag reduction function. The anti-pollution separation net is simple in preparation process, can be repeatedly used, and has a huge application prospect in preparation of the spiral-wound membrane module.

Description

technical field [0001] The invention relates to the technical field of separators, in particular to an anti-pollution separator and a preparation method and application thereof. Background technique [0002] Membrane technology is a separation technology centered on membrane materials with separation selectivity. The separation membrane can achieve the purpose of separation, concentration and purification of materials through pressure, concentration difference, vapor pressure difference, etc. as the driving force. As the core of membrane technology, membrane modules mainly have four types of structures: plate and frame, tubular, hollow fiber and roll. Benefiting from higher packing density and lower cost, industrial material separation membranes are often assembled in the form of rolled membranes. The main components of this type of rolled membrane module include the retentate side and the permeation side separator, the separation membrane, the permeation side flow channel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08L23/12D06M14/10B01D63/00D06M101/20
CPCC08J9/405D06M14/10B01D63/00D06M2101/20D06M2200/01Y02A20/131
Inventor 罗建泉黄嘉臣万印华
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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