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Preparation method of polymethyl methacrylate macroporous microsphere adsorbent

A polymethyl methacrylate, macroporous microsphere technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve epilepsy, disturbance of consciousness, endocrine disruption, etc. problem, to achieve the effect of high specific surface area and low density

Inactive Publication Date: 2014-12-24
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But some studies suggest that pyrethroid insecticides may predispose to disturbance of consciousness and seizures, affect the central nervous system in humans, and are also suspected of having endocrine disrupting effects

Method used

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  • Preparation method of polymethyl methacrylate macroporous microsphere adsorbent
  • Preparation method of polymethyl methacrylate macroporous microsphere adsorbent
  • Preparation method of polymethyl methacrylate macroporous microsphere adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. A method for preparing macroporous polymethyl methacrylate microsphere adsorbent by polymerization, the steps are:

[0039] (1) Preparation of monodisperse non-crosslinked polystyrene microspheres

[0040] 1.5g of polyvinylpyrrolidone powder was dissolved in the mixed solution of 95ml of absolute ethanol and 5ml of deionized water, and after being ultrasonically dispersed for 10 minutes, it was put into a three-necked flask equipped with nitrogen, a stirrer, and a condenser tube, and then mechanically Nitrogen was blown under stirring for half an hour. After fully removing the dissolved oxygen therein, add 25ml of styrene monomer dissolved in 0.2g of azobisisobutyronitrile under mechanical stirring, then react in a water bath at 70°C for 24 hours, and centrifuge to collect polystyrene particles after the reaction is complete. ball. The polystyrene microspheres were washed several times with a 1:3 solution of absolute ethanol and deionized water, and the prepared po...

Embodiment 2

[0060] 1. A method for preparing macroporous polymethyl methacrylate microsphere adsorbent by polymerization, characterized in that it is carried out according to the following steps:

[0061] (1) Preparation of monodisperse non-crosslinked polystyrene microspheres

[0062] 1.5g of polyvinylpyrrolidone powder was dissolved in the mixed solution of 95ml of absolute ethanol and 3ml of deionized water, and after being ultrasonically dispersed for 10 minutes, it was put into a three-necked flask equipped with nitrogen, a stirrer, and a condenser tube, and then mechanically Nitrogen was blown under stirring for half an hour. After fully removing the dissolved oxygen therein, add 25ml of styrene monomer dissolved in 0.2g of azobisisobutyronitrile under mechanical stirring, then react in a water bath at 70°C for 24 hours, and centrifuge to collect polystyrene particles after the reaction is complete. ball. The polystyrene microspheres were washed several times with a 1:3 solution o...

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Abstract

The invention discloses a preparation method of a polymethyl methacrylate macroporous microsphere adsorbent. The preparation method comprises the following steps: firstly, adding a styrene monomer which is dissolved with azodiisobutyronitrile into an alcohol-aqueous solution of polyvinylpyrrolidone to synthesize hydrophobic polystyrene microspheres; then, adding the hydrophobic polystyrene microspheres into concentrated sulfuric acid for cleaning after sulfonating in an oil bath, and drying to obtain sulfonated polystyrene microspheres which are amphipathic substances with hydrophilcity and lipophilicity; and finally, dispersing the sulfonated polystyrene microspheres into an aqueous phase as a stabilizer, adding single monomer methyl methacrylate into the aqueous phase as an oil phase for mixing, and magnetically stirring to prepare stable oil-in-water Pickering emulsion, and preparing a macroporous polymer with a great specific surface area by utilizing thermal-initiation polymerization.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental protection functional materials, in particular to a method for preparing a high specific surface macroporous adsorbent by using Pickering emulsion polymerization. Background technique [0002] Pickering emulsion is an emulsion formed by replacing surfactant with amphiphilic solid particles. Recently, Pickering emulsion polymerization has been developed as a novel polymerization reaction to prepare organic / inorganic hybrid hollow microspheres with excellent stability and low toxicity. At present, the inorganic particles commonly used in Pickering emulsions include silica, clay, carbon nanotubes, ferric oxide particles, etc., and the organic particles include lignin, polystyrene microspheres, attapulgite, etc. After chemical modification, these materials have good hydrophilic and hydrophobic properties, which is conducive to the formation of a stable Pickering emulsion in the n...

Claims

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Application Information

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IPC IPC(8): C08F257/02C08F220/14C08F112/08C08F8/36C08J9/28B01J20/26C02F1/28C02F1/58
Inventor 彭银仙曾俊高和平黄晓斌
Owner JIANGSU UNIV OF SCI & TECH
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