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Oil-water separation material with pH responsiveness and multi-stage structure and preparation method of oil-water separation material

An oil-water separation and responsive technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of cumbersome preparation methods, complex synthesis of polymer P, complex surface roughness operation, etc., and achieve simple synthesis steps, good separation effect

Active Publication Date: 2019-02-22
HARBIN ENG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, its preparation method is cumbersome, and the step-by-step construction of surface roughness and low free energy make its operation complicated. Importantly, there are few reports on oil-water separation of oil / water / oil three-phase complex systems.
Chinese patent CN106243271A discloses a method for preparing a pH-responsive ester copolymer P, in which the material is soaked in a mixed solution of the polymer P and silica for oil-water separation, but the synthesis of the polymer P is complicated and the sponge The absorbed organic solvent needs to be extruded by external force, and the oil repelling effect is not good

Method used

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  • Oil-water separation material with pH responsiveness and multi-stage structure and preparation method of oil-water separation material
  • Oil-water separation material with pH responsiveness and multi-stage structure and preparation method of oil-water separation material
  • Oil-water separation material with pH responsiveness and multi-stage structure and preparation method of oil-water separation material

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Embodiment

[0040] Weigh 1.61g of perfluorooctanoic acid (PFOA) into a 100mL beaker, add 30mL of deionized water to it, measure 1mL of aniline monomer and add it to the above PFOA solution, then place it in a constant temperature water bath at 25°C and stir for 30min to make it evenly mixed . Cut a 3cm×3cm polyester screen, wash it repeatedly with ethanol and deionized water, dry it, and then immerse it in the above mixed solution for 10 minutes. Weigh 2.74g of ammonium persulfate (APS) and dissolve it in 30mL of deionized water, ultrasonically shake until completely dissolved, and add the APS solution drop by drop into the beaker at a constant speed while keeping stirring. When the APS was added, the stirring was continued for 5 min, and then the stirring was stopped. The whole system was left to react for 24 hours in a constant temperature water bath at 25°C. After the reaction, the polyaniline / polyester mesh composite material was washed with absolute ethanol until it was colorless a...

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Abstract

The invention provides an oil-water separation material with pH responsiveness and a multi-stage structure and a preparation method of the oil-water separation material. The method comprises the following steps of taking aminobenzene as a monomer, perfluorooctanoic acid as a dopant and ammonium persulfate as an oxidizing agent, taking a polyester screen mesh, porous sponge, cotton fabric, cotton and the like respectively as base materials, synthesizing a polyaniline composite material with a micro / nano multi-stage structure by adopting an in-situ chemical oxidation polymerization method, wherein the oil-water separation material has a large quantity of micro stagger polyaniline fiber on an overall woven mesh structure. Polyaniline and sponge are mutually compounded to form a novel materialwith super-hydrophobic / super-oleophilic performance. The polyaniline composite material synthesized in one step by adopting an aminobenzene in-situ chemical oxidation polymerization method is used for oil-water separation, the synthetic process is simple, and the raw materials are easy to obtain; the oil-water separation material has universality and can be applied to multiple kinds of base material surfaces; the material can be used for carrying out oil-water separation of an oil / water / oil three-phase system through adjusting and controlling a pH value, different organic solvents in water are absorbed, and can be discharged in an basic solvent without needing to draw support from external force.

Description

technical field [0001] The invention relates to an oil-water separation material and a preparation method thereof, in particular to a pH-responsive multi-level structure oil-water separation material and a preparation method thereof, belonging to the synthesis of micro / nano multi-level structure composite materials. Background technique [0002] With the increasing demand for offshore oil extraction and the rapid development of modern industry, oil field leakage incidents and improper discharge of organic matter in industrial production occur frequently, causing serious pollution to natural water resources and soil, disrupting the balance of the ecosystem, and even Threats to human health, but also a waste of energy. Traditional oil-water separation technologies such as filtration, adsorption, and centrifugation have high costs and low separation efficiency. Traditional oil-water separation materials such as activated carbon and clay have low recycling rates, poor separation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C02F1/40C08G73/02
CPCB01D17/0202C02F1/40C08G73/0266
Inventor 李瑞琦王景风张国立王鹏理沙志强
Owner HARBIN ENG UNIV
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