Surface imprinted polymer for catalyzing degradation of organophosphorus pesticide and preparation method thereof

A technology of organophosphorus pesticides and surface imprinting, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of poor stability and high production costs, achieve good mechanical properties, and overcome catalytic degradation reactions , to overcome the effect of heterogeneous characteristics

Inactive Publication Date: 2011-01-12
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of safety and effectiveness, enzymes are the best choice for removing organophosphorus poisons, but they have poor stability in vitro and high production costs

Method used

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  • Surface imprinted polymer for catalyzing degradation of organophosphorus pesticide and preparation method thereof
  • Surface imprinted polymer for catalyzing degradation of organophosphorus pesticide and preparation method thereof
  • Surface imprinted polymer for catalyzing degradation of organophosphorus pesticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Preparation of Polystyrene Seeds

[0036] With potassium persulfate (KSP) as initiator, prepare monodisperse polystyrene seed emulsion with soap-free emulsion polymerization method, solid content 6.1% (mass fraction), average particle diameter 500nm, polydispersity index 1.02 (see attached figure 2 ).

[0037] 2. Preparation of Polystyrene Microspheres

[0038] Add 0.4ml of dibutyl phthalate (DBP), 5ml of sodium dodecyl sulfate (SDS, 2% aqueous solution) and 25ml of deionized water into a small beaker, and ultrasonically disperse. Then add styrene seed 1ml wherein, stir and swell; 4ml toluene, 0.08g dibenzoyl peroxide (BPO) are added in another small beaker, then add 15ml polyvinyl alcohol (PVA, 2% aqueous solution) wherein, 1ml of SDS (2% aqueous solution) and 14.0ml of water, after ultrasonic emulsification, add it to the swollen solution in the first step, continue to stir and swell; take another small beaker, add 3.7g of styrene, 0.3g of diethylene Benzene (D...

Embodiment 2

[0054] 1. Preparation of polystyrene seeds

[0055] Using potassium persulfate (KSP) as an initiator, prepare a monodisperse polystyrene seed emulsion with a soap-free emulsion polymerization method, with a solid content of 6.0% (mass fraction), an average particle diameter of 1.3 μm, and a polydispersity index of 1.02 (see attached Figure 5 ).

[0056] 2. Preparation of polystyrene microspheres

[0057] Add 0.4ml of dibutyl phthalate (DBP), 5ml of sodium dodecyl sulfate (SDS, 2% aqueous solution) and 25ml of deionized water into a small beaker, and ultrasonically disperse. Then add 1ml of styrene seeds to it, stir and swell; add 4ml of toluene, 0.08g of dibenzoyl peroxide (BPO) into the small beaker, then add 15ml of polyvinyl alcohol (PVA, 2% aqueous solution), 1ml of SDS (2% aqueous solution) and 14.0ml water, after ultrasonic emulsification, add it to the solution swollen in the first step, continue to stir and swell; take another small beaker, add 3.7g styrene, 0.3g di...

Embodiment 3

[0074] 1. Preparation of polystyrene seeds

[0075] Using potassium persulfate (KSP) as an initiator, a monodisperse polystyrene seed emulsion was prepared by soap-free emulsion polymerization, with a solid content of 6.1% (mass fraction), an average particle size of 500nm, and a polydispersity index of 1.02.

[0076] 2. Preparation of polystyrene microspheres

[0077] (1) Add 0.3ml of dibutyl phthalate (DBP), 5ml of sodium dodecyl sulfate (SDS, 2% aqueous solution) and 25ml of deionized water into a small beaker, and ultrasonically disperse. Then add 1ml of styrene seeds to it, stir and swell; add 3ml of toluene, 0.08g of dibenzoyl peroxide (BPO) into the small beaker, then add 15ml of polyvinyl alcohol (PVA, 2% aqueous solution), 1ml of SDS (2% aqueous solution) and 14.0ml water, after ultrasonic emulsification, add it to the solution swollen in the first step, continue to stir and swell; take another small beaker, add 2.5g styrene, 0.2g divinylbenzene (DVB), 15ml of 2% PV...

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Abstract

The invention discloses a surface imprinted polymer for catalyzing degradation of an organophosphorus pesticide and a preparation method thereof and relates to the field of surface imprinted polymers. The preparation method comprises the following steps of: preparing polystyrene seeds by a soap-free emulsion method; preparing polystyrene microspheres with particle diameter of 2 to 6 microns by a fractional swelling method; and bonding a chain transfer agent on the surfaces of the polystyrene microspheres. The preparation method comprises the main steps of: performing chloride acetylation on the microspheres with chloroacetic chloride, then aminating with ethydene diamine and then bonding the chain transfer agent with an amino; adding a template molecule under a proper solvent and performing graft polymerization on an amino acid derivative functional monomer and a cross-linking agent on the surfaces of the microspheres to form the needed polymer carrier surface template imprinted microspheres. The surface imprinted polymer with catalyzing, degrading and purifying functions on an organophosphorus compound is synthesized by taking an organophosphorus compound catalyzing and degradingreaction substrate as the template and organically combining the high-crosslinking degree insoluable porous polymeric microspheres with the template imprinting technology through a surface controllable graft hydrogel.

Description

Technical field: [0001] The invention relates to the field of surface imprinted polymers, in particular, it belongs to a surface imprinted polymer with a catalytic function and a preparation method thereof. technical background: [0002] In agricultural production, organophosphorus is the most widely used pesticide, and the use of organophosphate in the world accounts for about 36% of the total pesticide use. A common feature of the various classes of pesticides is that they not only kill pests but are also toxic to non-target organisms, including humans. Due to the massive use of organic phosphorus, it has brought serious problems to the ecological environment and threatened human health. Therefore, it becomes crucial to develop an economical, environmentally friendly and efficient way to remove these organophosphorus compounds. From the perspective of safety and effectiveness, enzyme is the best choice to remove organophosphorus poisons, but it has poor stability in vitr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F257/02C08F212/08C08F8/34C08F2/44C08J9/26B01J31/06A62D3/35A62D101/04A62D101/26
Inventor 郭天瑛郭勇杨颖
Owner NANKAI UNIV
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