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Preparation method of environment-friendly macromolecular emulsifier

A macromolecular emulsifier, an environment-friendly technology, applied in the field of preparation of an environment-friendly macromolecular emulsifier, can solve the problems of water pollution, consumption of dissolved oxygen, difficulty in the process of removing the emulsifier, etc., and achieves mild reaction conditions and operation. simple effect

Inactive Publication Date: 2017-01-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the emulsion polymerization process requires the use of emulsifiers. A large number of small molecule emulsifiers will bring difficulties to the subsequent process of removing emulsifiers. In addition, the migration of emulsifiers during the application process will affect the overall performance of the material. A large number of small molecule emulsifiers directly Discharged into natural water bodies such as rivers and oceans can cause water pollution, consume dissolved oxygen in water, harm aquatic organisms, and lead to deterioration of the ecological environment

Method used

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  • Preparation method of environment-friendly macromolecular emulsifier

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Embodiment 1: the preparation of a kind of environment-friendly macromolecular emulsifier

[0027] Add 8 parts of tert-butyl methacrylate, 1 part of ligand tris(2-dimethylaminoethyl)amine, 1 part of cuprous bromide, and 0.05 part of functional anthracene initiator in the reaction tube equipped with magneton, 8 parts of dimethyl sulfoxide, after three freeze-thaw cycles to remove oxygen and water in the system, reacted at room temperature under the protection of an inert gas for 7 hours, after the reaction was completed and purified, the end-group anthracene functionalized poly-tert-butyl methacrylate was obtained. segment;

[0028] Add 8 parts of butyl methacrylate, 1 part of ligand pentamethyldiethylenetriamine, 0.05 part of functionalized maleic anhydride initiator, 1 part of copper bromide, 8 parts of amide, after three freeze-thaw cycles to remove oxygen and water in the system, add the treated 0.5cm copper wire, and react at room temperature under the protection o...

Embodiment 2

[0031] Embodiment 2: the preparation of a kind of environment-friendly macromolecular emulsifier

[0032] Add 8 parts of tert-butyl acrylate, 2 parts of ligand pentamethyldiethylenetriamine, 1 part of cuprous bromide, 0.05 parts of functional anthracene initiator, 8 parts of dimethyl sulfoxide into the reaction tube equipped with magnetons. After three freeze-thaw cycles to remove oxygen and water in the system, react at room temperature under the protection of an inert gas for 5 hours, after the reaction is completed and purified, a long chain segment of poly(tert-butyl acrylate) functionalized with anthracene is obtained;

[0033] Add 8 parts of butyl acrylate, 2 parts of ligand pentamethyldiethylenetriamine, 0.05 part of functionalized maleic anhydride initiator, 1 part of copper bromide, 8 parts of dimethylformamide in the reaction tube equipped with magneton After three freeze-thaw cycles to remove oxygen and water in the system, add the treated 0.5cm copper wire, and rea...

Embodiment 3

[0036] Embodiment 3: the preparation of a kind of environment-friendly macromolecular emulsifier

[0037] Add 8 parts of tert-butyl acrylate, 2 parts of ligand 4,4'-dinonyl-2,2'-bipyridine, 1 part of cuprous bromide, functional anthracene initiator into the reaction tube equipped with magneton 0.1 parts, 8 parts of dimethylformamide, after three refrigeration cycles to remove oxygen and water in the system, react at room temperature under the protection of an inert gas for 10 hours, after the reaction is completed and purified, the terminal anthracene-functionalized poly(tert-butyl acrylate) is obtained. segment;

[0038] Add 8 parts of styrene, 2 parts of ligand tris(2-dimethylaminoethyl)amine, 0.1 part of functionalized maleic anhydride initiator, 1 part of copper bromide, and 8 parts of toluene in the reaction tube equipped with magneton , after removing oxygen and water in the system through three freezing cycles, add a treated 1cm copper wire, and react at room temperatu...

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Abstract

The invention relates to a preparation method of an environment-friendly macromolecular emulsifier. The preparation method comprises the following steps: firstly, designing and synthesizing a functional potential hydrophilic chain segment and a hydrophobic chain segment by adopting a controllable living polymerization technology (ATRP (Atom Transfer Radical Polymerization) and SET-LRP (Single Electron Transfer-Living Radical Polymerization)); secondly, connecting the potential hydrophilic chain segment and the hydrophobic chain segment together by Diels Alder reaction, and hydrolyzing under acidic conditions to obtain an amphiphilic block copolymer, wherein the amphiphilic block copolymer can be self-assembled in water to form a micelle; enabling the hydrophilic chain segment and the hydrophobic chain segment of the micelle to be broken and generate Diels Alder reverse reaction under the action of an ultrasonic force. The hydrophilic chain segment of which an end group released by ultrasonic fracture is anthracene has a fluorescence effect which is detected by a fluorescence spectrophotometer. The macromolecular emulsifier can be used for preparing functional emulsion particles. Besides, the macromolecular emulsifier is the amphiphilic block copolymer and has sensitivity to the ultrasonic force, so the macromolecular emulsifier has potential applications in biomedicine.

Description

technical field [0001] The invention belongs to a preparation method of an emulsifier, in particular to a preparation method of an environment-friendly macromolecular emulsifier. Background technique [0002] At present, emulsion polymerization is still a very widely used technique for preparing latex, such as rubber emulsion, pressure-sensitive adhesive, latex paint, functional coating and paint, and some functional brush-like particles, etc. Different from bulk polymerization and solution polymerization, emulsion polymerization uses water as the medium, has good heat dissipation, controllable reaction temperature, and high reaction rate, and can obtain high molecular weight polymers, so it has been widely used in industry and academia. However, the emulsion polymerization process requires the use of emulsifiers. A large number of small molecule emulsifiers will bring difficulties to the subsequent process of removing emulsifiers. In addition, the migration of emulsifiers d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/02C08F120/18C08F112/08C08F2/24
CPCC08F2/24C08F112/08C08F120/18C08G81/021C08F293/005C08F2438/01
Inventor 张秋禹李辉刘锦刘毅彬
Owner NORTHWESTERN POLYTECHNICAL UNIV
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