Magnetic polystyrene foam and preparation method and application thereof

A polystyrene foam, magnetic technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems of incompatibility, low recycling efficiency, difficult recycling, etc. Falling off, good adsorption effect, the effect of broadening the scope of application

Inactive Publication Date: 2016-02-03
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chih-FengWang et al. (Chih-FengWang, Sheng-JhihLin.RobustSuperhydrophobic / SuperoleophilicSpongeforEffectiveContinuousAbsorption and ExpulsionofOilPollutantsfromWater.[J].ACSAppliedMaterials&Interfaces.2013,5,8861-8864.) prepared a kind of efficient PDMS and carbon nanotubes loaded on polyurethane sponge This material can absorb various organic solvents and oils, but it is not suitable for dealing with a large amount of oil spilled at sea due to factors such as low recycling efficiency and difficult recovery

Method used

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  • Magnetic polystyrene foam and preparation method and application thereof
  • Magnetic polystyrene foam and preparation method and application thereof
  • Magnetic polystyrene foam and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0023] A kind of preparation method of magnetic polystyrene foam of the present invention, concrete preparation process is as follows figure 1 , including the following steps:

[0024] Step 1, Fe 3 o 4 Deionized aqueous solution, sonicated at 25-35°C for 10-20 minutes to form Fe 3 o 4 Dispersions;

[0025] Step 2, adding the trimmed clean foam to the Fe obtained in step 1 3 o 4 In the dispersion liquid, ultrasonically stir at room temperature for 3.5-4.5 hours to obtain magnetic foam;

[0026] Step 3, add the magnetic foam obtained in step 2 into the SDBS solution, stir it ultrasonically for 10-20 minutes, and then transfer it into a three-necked flask, wherein the mass ratio of SDBS to water is 1:100;

[0027] Step 4, heating the mixed solution obtained in step 3 in a water bath, increasing the heating temperature of the water bath to 65-75°C, adding St, DVB and AIBN, so that the mass ratio of AIBN to St to DVB is 1:(6.75-12):( 67.5~120), the reaction time is 5.5~6.5h...

Embodiment 1

[0029] The first step: 10 mL of Fe coated with hollow oleic acid with a mass concentration of 2.5 mg / mL 3 o 4 Deionized aqueous solution, sonicated at 25°C for 20 min, to form hollow oleic acid-coated Fe 3 o 4 Dispersions;

[0030] In the second step, the clean foam cut into (3cm×1.5cm×1.5cm) was added to the hollow oleic acid-coated Fe obtained in the first step 3 o 4 In the dispersion, ultrasonically stir for 3.5 hours at room temperature;

[0031] In the third step, add the magnetic foam obtained in the second step into 50mL of an aqueous solution in which 500mg of SDBS is dissolved, stir ultrasonically for 10min, and then transfer it into a three-necked flask;

[0032] In the fourth step, the heating temperature of the water bath in the third step was increased to 65°C, and 3 mL of St, 0.3 mL of DVB and 30 mg of AIBN were added, and the reaction time was 5.5 h. °C drying to obtain magnetic polystyrene foam.

[0033] The magnetic polystyrene foam that embodiment 1 ga...

Embodiment 2

[0035] The first step: 12 mL of Fe coated with hollow oleic acid with a mass concentration of 2.5 mg / mL 3 o 4 Deionized aqueous solution, sonicated at 30°C for 15 min to form hollow oleic acid-coated Fe 3 o 4 Dispersions;

[0036] In the second step, the clean foam cut into (3cm×1.5cm×1.5cm) was added to the hollow oleic acid-coated Fe obtained in the first step 3 o 4 In the dispersion, ultrasonically stir for 4 hours at room temperature;

[0037] In the third step, add the magnetic foam obtained in the second step to 55 mL of an aqueous solution in which 550 mg of SDBS is dissolved, stir it ultrasonically for 15 minutes, and then transfer it into a three-necked flask;

[0038] In the fourth step, the heating temperature of the water bath in the third step was increased to 70°C, and 3.5mL of St, 0.35mL of DVB and 35mg of AIBN were added, and the reaction time was 6h. °C drying to obtain magnetic polystyrene foam.

[0039] Clean foam, magnetic foam and the magnetic polys...

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Abstract

The invention discloses magnetic polystyrene foam. Foam serves as a load matrix, the surface of the foam is loaded with a polystyrene slice layer and Fe3O4 nano-particles covered with hollow oleic acid, interconnected high-hydrophobic materials of a three-dimensional network structure are provided, and the loaded polystyrene slice layer and the loaded super-paramagnetic Fe3O4 nano-particles covered with the hollow oleic acid serve as adsorption and magnetic recovery carriers. The Fe3O4 nano-particles covered with the hollow oleic acid are ultrasonically dispersed in an ethanol solution, the foam is immersed in a uniformly-mixed solution of the Fe3O4 particles covered with the hollow oleic acid to be ultrasonically dispersed, magnetic foam is obtained, the magnetic foam is added and dissolved in a sodium dodecyl benzene sulfonate solution to be ultrasonically homogenized, styrene and divinylbenzene are added under the N2 atmosphere, a polymerization reaction is conducted under the effect of an initiator, namely, 2,2'-azobisisobutyronitrile, and finally the magnetic polystyrene foam is obtained. The cyclic utilization rate of the magnetic polystyrene foam is high, the heat stability of an oil absorption material is enhanced, and the application range of the material is widened.

Description

technical field [0001] The invention relates to a magnetic polystyrene foam and its preparation method and application, and belongs to the technical field of environment-friendly oil-absorbing materials. Background technique [0002] How to deal with large-scale oil spills at sea has always been a hot topic in research all over the world. The oil-absorbing materials used to deal with the adsorption of oil on the water surface must have good hydrophobicity and lipophilicity, good buoyancy, fast Excellent adsorption rate and good recycling ability. The nanocomposite oil-absorbing materials currently studied are mostly granular, powder or film materials. Although they have broad application prospects, they are difficult to recover after oil absorption. In addition, most nanocomposite materials are expensive, which seriously restricts the use of nanocomposite materials in marine oil spill treatment. in the application. How to solve the problem that the oil-absorbing material i...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C08F212/08C08F212/36C02F101/32
Inventor 姜炜郁榴华谢覃郝嘎子周帅张宁钟素婷李凤生
Owner NANJING UNIV OF SCI & TECH
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