Fully aromatic phenolic amine copolymer containing multifunctional groups and its preparation method and application

An aromatic phenolamine copolymer, multifunctional technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc. See reports and other issues to achieve the effect of improving the degree of compact packing, saving raw materials, and good solvent resistance

Inactive Publication Date: 2017-12-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, this copolymer synthesized by 50%-99% ethyleneamine aliphatic monomer lacks enough aromatic rings and π electrons, and it is speculated that it has no significant effect on antibiotics with aromatic ring structures such as quinolones. Adsorption
It can be seen that it is difficult to obtain high-performance adsorbents only by the active groups on the polymer chain.
[0006] It can be seen that, starting from the molecular structure, designing and synthesizing a fully exposed active functional group and a highly aromatic ring is an effective way to obtain a strong adsorbent for antibiotics, and no research has been reported on this aspect

Method used

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  • Fully aromatic phenolic amine copolymer containing multifunctional groups and its preparation method and application
  • Fully aromatic phenolic amine copolymer containing multifunctional groups and its preparation method and application
  • Fully aromatic phenolic amine copolymer containing multifunctional groups and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Accurately weigh 2.054g of m-phenylenediamine and 0.110g of hydroquinone into a 50mL Erlenmeyer flask, add 20ml of deionized water to ultrasonically dissolve them, mix the monomer solutions and place them in a 0°C water bath and stir , equilibrate for 30min, accurately weigh 13.70g of persulfate and dissolve it in 150ml of deionized water, and maintain it in a water bath at 0°C, add the persulfate solution dropwise to the above mixed monomer solution at a rate of 1 drop / 3 seconds middle. After the addition was complete, the stirring reaction was continued until 6h. Track the potential, pH and temperature changes of the reaction solution throughout the process. After the reaction is over, pour the reaction solution into a centrifuge tube for centrifugation. After the polymer settles, use a dropper to absorb the upper layer liquid and wash it with deionized water. After dispersing, wash it again; repeat the above operation until the upper layer liquid in the centrifuge t...

Embodiment 2～6

[0048] According to the method of embodiment 1, the molar ratio (total molar number is 0.02mol) of changing m-phenylenediamine and hydroquinone is respectively 90:10, 85:15, 80:20, 70:30, 50:50, The doped m-phenylenediamine-hydroquinone copolymers were prepared, and the apparent yields of the copolymers were 88.2%, 90.1%, 91.3%, 95.6%, and 87.2%, respectively. The resulting doped copolymers were all transferred to ammonia water and stirred for 6 hours, dried and weighed after centrifugation to obtain de-doped powdered copolymer products, and the calculated yields were 64.9%, 66.0%, 68.4%, respectively. 72.1%, 55.2%.

Embodiment 7

[0058] UV testing of m-phenylenediamine hydroquinone copolymers. About 2 mg of the copolymers obtained in Examples 1 to 6 and the polym-phenylenediamine and polyhydroquinone obtained in Comparative Examples 1 and 3 were respectively placed in 1M NaOH solution. The degree of solubility of the copolymers was different. The solution of copolymerization product carries out ultraviolet test respectively subsequently, and ultraviolet absorption spectrum is as follows figure 1 shown. There are obvious differences between the peaks of the polymer and the two monomers. Polyhydroquinone has two obvious shoulder peaks, and it has a relatively strong tailing absorption peak in the high wavelength region, which shows that polyhydroquinone has A wide range of planar conjugate structures. Poly-m-phenylenediamine and copolymers have an obvious absorption peak at 300nm, which is caused by the π-π transition. Compared with the absorption peak of the monomer, it moves a certain distance to the...

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Abstract

The invention relates to a full-aromatic phenol-amine copolymer containing multifunctional groups and a preparation method and application thereof. The method comprises the steps that a phenylenediamine monomer solution reacts with a benzenediol monomer solution under the action of an oxidizing agent solution to obtain the full-aromatic phenol-amine copolymer containing the multifunctional groups, and the copolymer is used for adsorbing antibiotics in water. Compared with the prior art, copolymerization is performed on the benzenediol monomers and the phenylenediamine monomers to obtain the aromatic nucleus copolymer which contains a large number of amino groups, imine groups and hydroxyl groups and is rich in pi electrons, the copolymer can have an adsorption reaction with most organic substances, then the copolymer can efficiently remove the antibiotics such as ciprofloxacin in the water, and the ciprofloxacin removing rate can be more than 99 percent; the prepared full-aromatic phenol-amine copolymer containing the multifunctional groups has the advantages of being simple, convenient and efficient, low in cost and higher in yield and has the scale production potential, and the highest yield can reach 95.6 percent.

Description

technical field [0001] The invention relates to the preparation of a copolymer, in particular to a multi-functional group-containing fully aromatic phenolamine copolymer and its preparation method and application. Background technique [0002] Antibiotics are a class of chemical substances produced by the metabolism of microorganisms that can inhibit or kill other microorganisms at low concentrations. China is a big country in the production and use of antibiotics. According to statistics, in 2013, the total production of antibiotics in China reached 248,000 tons, and the total amount of antibiotics used was about 162,000 tons. A large number of antibiotics are discharged into the external environment through different channels. Today, China Antibiotics have been detected in the water systems of major river basins, and the concentrations of different types of antibiotics in different regions range from a few nanograms to a few micrograms (Q.Q.Zhang, G.G.Ying, C.G.Pan, Y.S.Li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28
Inventor 黄美荣李新贵郭世坚
Owner TONGJI UNIV
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