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Mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane, as well as preparation methods and application of mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane

A technology of hydrophilic polymers and bionic functions, applied in chemical instruments and methods, separation methods, liquid separation, etc., can solve problems such as short use time, poor separation effect of oil-water mixture/emulsion, and complicated modification methods, and achieve Effects of high separation efficiency, simple and versatile method, excellent contamination resistance and reusability

Active Publication Date: 2021-05-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a mussel biomimetic functionalized hydrophilic polymer and hydrophilic polymer in order to overcome the defects of poor oil-water mixture / emulsion separation effect, short service time and complicated modification methods in the prior art Network-modified superhydrophilic omentum and its preparation method and application, the separation flux of the hydrophilic polymer network-modified superhydrophilic omentum is as high as 5641.1L / m -2 h -1 , the separation efficiency is as high as 99.98%, with excellent anti-pollution and reusability

Method used

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  • Mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane, as well as preparation methods and application of mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane
  • Mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane, as well as preparation methods and application of mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane
  • Mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane, as well as preparation methods and application of mussel bionic functional hydrophilic polymer and hydrophilic polymer network modified super-hydrophilic net membrane

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preparation example Construction

[0043] In order to achieve the purpose of the present invention, the first aspect of the present invention provides a method for preparing a mussel biomimetic functionalized hydrophilic polymer, wherein the preparation method comprises:

[0044] (1) In the presence of an initiator, 2-(dimethylamino)ethyl methacrylate, polyethanol methacrylate, pentafluorophenol acrylate, 4-cyano-4(dodecyl sulfide Alkylthiocarbonyl)sulfanylvaleric acid and 1,4-dioxane are contacted for heating and concentration treatment to obtain the product I;

[0045] (2) Under oil bath conditions, the product I, dichloromethane, dopamine hydrochloride and triethylamine are contacted and centrifuged to obtain the product II;

[0046] (3) Under nitrogen protection, the product II, dichloromethane and methyl iodide were contacted to obtain a hydrophilic polymer.

[0047] The inventors of the present invention unexpectedly found that: 4-cyano-4 (dodecylsulfanylthiocarbonyl) sulfanylvaleric acid is used as RAFT...

Embodiment approach

[0058] According to a preferred embodiment of the present invention, the preparation method of the hydrophilic polymer comprises:

[0059] (1') Take -2-(dimethylamino)ethyl methacrylate, polyethanol methacrylate, pentafluorophenol acrylate, 4-cyano-4 (dodecylsulfanylthiocarbonyl) Dissolve sulfanyl valeric acid in 1,4-dioxane in a round-bottomed flask; blow nitrogen gas and stir for 20-40 minutes; add initiator azobisisobutyronitrile, nitrogen gas and stir for 10-20 minutes to obtain the first reaction system , relative to 10-30mL of 1,4-dioxane, the 2-(dimethylamino)ethyl methacrylate, polyethanol methacrylate, pentafluorophenol acrylate, 4-cyano The millimolar (unit, mmol) ratio of the consumption of -4 (dodecylsulfanylthiocarbonyl) sulfanylvaleric acid and azobisisobutyronitrile is (8-15): (10-16) :(9-18):(0.75-1.7):(0.1875-0.425);

[0060] (2') Transfer the first reaction system to an oil bath for heating, and stir at 72° C. for 3-4 hours to obtain a second reaction syste...

preparation example 1

[0095] This preparation example is to illustrate the hydrophilic polymer prepared by the preparation method of the present invention.

[0096] according to figure 1 The synthetic route of the shown hydrophilic polymer:

[0097] In the first step, take 2-(dimethylamino)ethyl methacrylate (10mmol, 1.57g), polyethanol methacrylate (10mmol, 4.75g), pentafluorophenol acrylate (10mmol, 2.38g), 4-cyano-4 (dodecylsulfanylthiocarbonyl) sulfanylvaleric acid (1mmol, 0.403g) was dissolved in 17mL 1,4-dioxane in a 50mL round bottom flask; nitrogen gas was stirred for 20min Add the initiator azobisisobutyronitrile (0.25mmol, 0.041g), and stir for 10min with nitrogen gas to obtain the first reaction system; transfer the first reaction system to an oil bath for heating, and stir for 4h at 72°C to obtain the second Reaction system: The obtained second reaction system was concentrated by rotary evaporation at 60°C, and then slowly dropped into petroleum ether (or n-hexane), and the product I ...

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Abstract

The invention relates to the field of surface modification of high-molecular functional materials and solid materials, and discloses a mussel bionic functional hydrophilic polymer and a hydrophilic polymer network modified super-hydrophilic net membrane, as well as preparation methods and application of the mussel bionic functional hydrophilic polymer and the hydrophilic polymer network modified super-hydrophilic net membrane. The preparation method of the mussel bionic functional hydrophilic polymer comprises the steps: (1) in the presence of an initiator, enabling methacrylic acid-2-(dimethylamino)ethyl ester, polyethylene glycol methacrylate, pentafluorophenol acrylate, 4-cyano-4-(dodecylsulfanylthiocarbonyl)sulfanylpentanoic acid and 1,4-dioxane to be in contact, so as to obtain a product I; (2) contacting the product I, dichloromethane, dopamine hydrochloride and triethylamine, and performing centrifugal separation to obtain a product II; and (3) contacting the product II, dichloromethane and methyl iodide to obtain the hydrophilic polymer. The separation flux of the hydrophilic polymer network modified super-hydrophilic net membrane is as high as 5641.1 L / m<-2>*h<-1>, and the separation efficiency is as high as 99.98%.

Description

technical field [0001] The invention relates to the field of polymer functional materials and surface modification of solid materials, in particular to a mussel biomimetic functionalized hydrophilic polymer, a hydrophilic polymer network modified superhydrophilic omentum, a preparation method and an application. Background technique [0002] In recent years, while focusing on economic development, society has increasingly focused on environmental protection issues. Frequent marine oil spills and industrial oily sewage discharges have posed a great threat to the ecological environment and human health. The development of effective oil-water separation technology is of great significance to the protection of the ecological environment and the saving of limited water resources. Membrane separation technology based on the difference in wettability of oil and water has become a research hotspot due to its environmental protection, energy saving, high separation efficiency, and co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/44C08F8/32C08F283/06C08F220/34C08F220/22B01D17/00B01D17/02
CPCC08F283/065C08F8/44B01D17/02B01D17/085C08F220/34C08F220/22C08F8/32
Inventor 李琳戴彩丽徐忠正孙永鹏吴一宁赵光赵明伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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