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Polyasparagine derivative modified stainless steel mesh membrane for oil-water separation and preparation method thereof

A polyasparagine, oil-water separation technology, applied in separation methods, liquid separation, grease/oily substances/suspton removal devices, etc., can solve the problems of dopamine waste, long deposition time, secondary pollution of waste environment, etc., to achieve The oil-water separation effect is good, the process is simple, and the process is fast.

Active Publication Date: 2021-06-01
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the rate of air oxidation of dopamine to form polydopamine coating is slow, the deposition time is long, and the stability is poor, which easily causes serious waste of dopamine and environmental pollution. These problems greatly limit the large-scale application of dopamine in real life and industrial production. In addition, most of the commonly used oil-water separation materials are based on non-degradable or refractory polymer materials, and the waste after use is easy to cause secondary pollution to the environment

Method used

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  • Polyasparagine derivative modified stainless steel mesh membrane for oil-water separation and preparation method thereof
  • Polyasparagine derivative modified stainless steel mesh membrane for oil-water separation and preparation method thereof
  • Polyasparagine derivative modified stainless steel mesh membrane for oil-water separation and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] (1) Preparation of dopa / zwitterion functionalized polyasparagine derivatives

[0044] Dissolve 100g of polysuccinimide PSI (molecular weight 7000) in 300g of DMSO; add 39.1g of dopamine hydrochloride and 100ml of triethylamine. After the dissolution is complete, carry out ring-opening reaction at 60°C for 8 hours; then, add 21.1g of N,N-Dimethyl-1,3-propanediamine, conduct ring-opening reaction at 60°C for 12h; then, add 38.21g of dodecylamine, perform ring-opening reaction at 60°C for 12h; then, add 3.14g of ethanolamine , ring-opening reaction at 60°C for 24h; finally, add 30.18g of 1,3-propane sultone, react at 40°C for 24h, the side group tertiary amine group grafted to the polyasparagine derivative Perform quaternization reaction; prepare dopa / zwitterion functionalized polyasparagine derivatives after purification and drying;

[0045] (2) Preparation of oil-water separation stainless steel mesh

[0046] Mix 10g of dopa / zwitterionic functionalized polyasparagine d...

Embodiment 2

[0066] (1) Preparation of dopa / zwitterion functionalized polyasparagine derivatives

[0067] Dissolve 100g of polysuccinimide PSI (molecular weight: 15,000) in 500g of DMF; add 39.1g of dopamine hydrochloride and 100ml of triethylamine, and after the dissolution is complete, carry out ring-opening reaction at 70°C for 3 hours; then, add 31.6g of N,N-Dimethyl-1,3-propanediamine, conduct ring-opening reaction at 60°C for 7h; then, add 19.11g of dodecylamine, perform ring-opening reaction at 80°C for 2h; then, add 12.6g of ethanolamine , ring-opening reaction was carried out at 30°C for 24h; finally, 45.3g of 1,3-propane sultone was added and reacted at 50°C for 5h. Perform quaternization reaction; prepare dopa / zwitterion functionalized polyasparagine derivatives after purification and drying;

[0068] (2) Preparation of oil-water separation stainless steel mesh

[0069] Mix 10g dopa / zwitterionic functionalized polyasparagine derivatives, 1g sodium percarbonate and 1000g water,...

Embodiment 3

[0072] (1) Preparation of dopa / zwitterion functionalized polyasparagine derivatives

[0073] Dissolve 100g of polysuccinimide PSI (molecular weight: 100,000) in 100g of ethyl acetate; add 58.7g of dopamine hydrochloride and 180ml of triethylamine. After the dissolution is complete, carry out ring-opening reaction at 60°C for 8 hours; then, add 42.1 g of N,N-dimethyl-1,3-propanediamine, conduct ring-opening reaction at 60°C for 8h; then, add 49.7g of hexadecylamine, perform ring-opening reaction at 60°C for 8h; then, add 3.15g The ethanolamine was subjected to a ring-opening reaction at 40°C for 24h; finally, 67.3g of 1,4-butane sultone was added and reacted at 40°C for 26h. The group undergoes quaternization reaction; after purification and drying, dopa / zwitterion functionalized polyasparagine derivatives are produced;

[0074] (2) Preparation of oil-water separation stainless steel mesh

[0075] Mix 100g of dopa / zwitterionic functionalized polyasparagine derivatives, 8g of ...

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Abstract

The invention discloses a polyasparagine derivative modified stainless steel net membrane for oil-water separation and a preparation method thereof. In the present invention, groups such as zwitterions, dopamine, long-chain alkyl groups and ethanolamine are grafted on the polysuccinimide polymer by ring-opening reaction, and the dopa / zwitterion function is obtained by modifying the surface of the stainless steel mesh Polyasparagine derivatives modified stainless steel mesh for oil-water separation. The polyasparagine derivative modified stainless steel mesh membrane for oil-water separation provided by the present invention has the characteristics of good oil-water separation effect and good stability; the polyasparagine derivative material used is biodegradable and environmentally friendly, After use, the waste will not cause secondary pollution to the environment. The preparation method of the polyasparagine derivative modified stainless steel omentum membrane for oil-water separation has simple and fast process, mild reaction, easy control and high safety.

Description

technical field [0001] The invention relates to an oil-water separation stainless steel mesh and a preparation method thereof, in particular to a polyasparagine derivative modified oil-water separation stainless steel mesh and a preparation method thereof. Background technique [0002] With the massive discharge of oily sewage in production and life and the frequent occurrence of oil spill accidents at sea, oil pollution in water has become a major problem that endangers human health and environmental safety. In order to maintain a good ecological environment and human health, and protect limited water resources, the effective separation of oily sewage has become an urgent problem to be solved. At present, there are many ways to control water pollution caused by toxic organic solvents or leakage of petroleum products. Traditional oil-water separation methods include gravity separation, oil skimming, centrifugation, and flotation, etc., which have a good effect on oil-water s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/50C08G73/10C02F1/40
CPCC02F1/40C08G73/1092C23C22/50
Inventor 彭新艳刘云鸿李嘉文
Owner QUANZHOU NORMAL UNIV
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