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Multi-functional amphiphilic low-surface-energy polymer, and preparation method and application thereof

A low surface energy, amphiphilic technology, applied in ultrafiltration, osmosis/dialysis water/sewage treatment, etc., can solve the problems of general anti-fouling effect, achieve good compatibility, good separation effect, and great application prospects Effect

Active Publication Date: 2015-09-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A simple anti-fouling effect is general

Method used

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  • Multi-functional amphiphilic low-surface-energy polymer, and preparation method and application thereof
  • Multi-functional amphiphilic low-surface-energy polymer, and preparation method and application thereof
  • Multi-functional amphiphilic low-surface-energy polymer, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: This example prepares the amphiphilic siloxane-containing copolymer

[0033] 1) Take 10g 20g 0.6g benzoyl peroxide, 30g butyl acetate. Divide 2,2-azobisisobutyronitrile into three parts, the first part is 0.13g, the second part is 0.36, the third part is 0.11g, and butyl acetate is divided into two parts, the first part is 7.5 g, the second portion is 22.5g.

[0034] 2) Dissolve the first part of benzoyl peroxide in the first part of butyl acetate, put it into a three-necked flask connected with a condenser tube and N2 blowing device, and preheat to 70°C;

[0035] 3) will all Tert-butyl methacrylate, stearyl mercaptan and the second part of benzoyl peroxide are dissolved in the second part of butyl acetate, put into a constant pressure dropping funnel, and are added dropwise in the three-necked flask of step 2), And control the dripping within 2 hours, under the protection of nitrogen, after the polymerization reaction for 12 hours, add the third p...

Embodiment 2

[0038] Embodiment 2: This example prepares the amphiphilic siloxane-containing copolymer

[0039] 1) Take 10g 2.78g 0.38g 2,2-azobisisobutyronitrile, 25.56g propylene glycol methyl ether acetate. Divide 2,2-azobisisobutyronitrile into three parts, the first part is 0.07g, the second part is 0.23g, and the third part is 0.08g. Propylene glycol methyl ether acetate is divided into two parts. One serving was 6.90g and the second serving was 18.66g.

[0040] 2) Dissolve the first part of 2,2-azobisisobutyronitrile in the first part of propylene glycol methyl ether acetate, and put it into the 2 Preheat the three-neck flask of the air blowing device to 80°C;

[0041] 3) will all Isobutyl methacrylate, dodecanethiol and the second part of 2,2-azobisisobutyronitrile are dissolved in the second part of propylene glycol methyl ether acetate, put into a constant pressure dropping funnel, and added dropwise to step 2) In a three-neck flask, and control the dripping within 2 hours...

Embodiment 3

[0044] Embodiment 3: This example prepares the amphiphilic siloxane-containing copolymer

[0045] 1) Take 7.36g 0.48g 0.31g benzoyl peroxide, 23.52g methyl ethyl ketone. Divide benzoyl peroxide into three parts, the first part is 0.04g, the second part is 0.2g, the third part is 0.07g, methyl ethyl ketone is divided into two parts, the first part is 4.71g, The second serving was 18.81g.

[0046] 2) Dissolve the first part of benzoyl peroxide in the first part of methyl ethyl ketone, put it into the 2 Preheat the three-neck flask of the air blowing device to 70°C;

[0047] 3) will all Dissolve the second part of benzoyl peroxide in the second part of methyl ethyl ketone, put it into a constant pressure dropping funnel, add dropwise in the three-necked flask of step 2), and control the dripping in 2h. Under the protection of nitrogen, after the polymerization reaction for 12 hours, add the third part of benzoyl peroxide, raise the temperature to 80°C, and keep the tempe...

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Abstract

The invention discloses a preparation method of a multi-functional amphiphilic low-surface-energy polymer brush, which is applied to antifouling modification of a biofouling separation ultrafiltration membrane. The preparation method of the related low-surface-energy polysiloxane is as follows: a multi-functional amphiphilic low-surface-energy modifier is obtained by performing stirring reaction on the raw materials, comprising polydimethylsiloxane monomethyl ether-methacrylate (PDMSMA), methoxypolyethylene glycol-methacrylate (PEGMA), an initiator and a solvent, by a radical solution polymerization method and then performing treatment. The modifier and a polymer membrane material are dissolved into a dimethyl formamide (DMF) solvent according to a certain mass ratio and then a modified ultrafiltration membrane is prepared by an immersion precipitation phase inversion method. A hydrophilic and hydrophobic low-surface-energy amphiphilic antifouling microarea appears on the surface of the modified membrane. According to the invention, the preparation method of the polymer modifier is simple; the membrane modification condition is mild and easy to realize; and the modified membrane has an excellent anti-biofouling effect and can be applied to sewage treatment.

Description

technical field [0001] The invention relates to an amphiphilic polymer containing a siloxane low surface energy chain segment, a preparation method thereof, and an application of modified biomass fouling separation ultrafiltration membranes. Background technique [0002] Industrial sewage and urban domestic sewage are the two most important types of sewage resources. my country's urban sewage is about 800 million cubic meters per year, which is almost equal to the consumption of tap water. There are only 0.1% pollutants in this part of the water, and most of the rest exist in the form of water sources, becoming the second sewage resource in cities. The recycling of industrial sewage can not only save a large amount of fresh water resources, but also reduce sewage discharge and achieve the purpose of protecting the environment. [0003] Ultrafiltration membranes widely used in sewage treatment are prone to protein pollution: they are prone to specific interaction with organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F299/08B01D61/16C02F1/44
Inventor 张庆华高帆张广法詹晓力陈丰秋
Owner ZHEJIANG UNIV
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