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Core-shell structure particles of electro-conductive macromolecule coated polymer microspheres and preparation method thereof

A technology of conductive polymer and core-shell structure, which is applied in the field of nanoparticle synthesis, can solve the problems of environmental pollution and increase the cost of core-shell structure particle synthesis, and achieve the effects of low cost, reduced synthesis cost, and mild preparation conditions

Inactive Publication Date: 2018-05-08
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although many methods can effectively synthesize core-shell structure particles, a large number of highly toxic surface modifiers are required in the synthesis process, which not only increases the synthesis cost of core-shell structure particles, but also easily pollutes the environment.

Method used

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  • Core-shell structure particles of electro-conductive macromolecule coated polymer microspheres and preparation method thereof
  • Core-shell structure particles of electro-conductive macromolecule coated polymer microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Take 0.1g of polyvinylpyrrolidone (average relative molecular weight 45,000), mix 2ml of methyl methacrylate monomer, and 100mL of deionized water, and use ultrasonic intensity of 20kHz for 20min at room temperature. After the solution is clarified, add 0.05g ammonium persulfate, and then stir at 40°C with a stirring speed of 500rpm for 10 hours to obtain an emulsion containing polymethyl methacrylate microspheres. After suction filtration and drying, polymethylmethacrylate with an average particle size of about 230nm is obtained. Methyl acrylate microspheres, the scanning electron microscope (SEM) photograph of gained polymethyl methacrylate microspheres is as follows figure 1 Shown; As can be seen from the figure, the average particle diameter of polymethyl methacrylate nanoparticles is about 230nm, and the particle uniformity is good;

[0032] (2) Get the polymethyl methacrylate microsphere 4g obtained above, disperse in the deionized water of 46ml, ultrasonic 30...

Embodiment 2

[0035] (1) Take 0.1g of polyvinylpyrrolidone (average relative molecular weight: 45,000), mix 2ml of methyl methacrylate monomer, and 100mL of distilled water, and use ultrasonic intensity of 20kHz to sonicate for 20min at room temperature. After the solution is clarified, add 0.05g of persulfuric acid Ammonium, then at 40°C, stirring speed is 500rpm, stirring for 10h, you can get the emulsion containing polymethyl methacrylate microspheres, after suction filtration and drying, you can get polymethyl methacrylate with an average particle size of about 230nm Ester microspheres;

[0036] (2) Get the polymethyl methacrylate microsphere 4g obtained above, disperse in the deionized water of 46ml, ultrasonic 30min, make it fully disperse, obtain the polymethyl methacrylate microsphere colloid that concentration is 8wt% solution;

[0037](3) At 20°C, with a stirring speed of 500rpm, add 0.5g sodium lauryl sulfate to the polymethyl methacrylate microsphere colloid solution, after sti...

Embodiment 3

[0039] (1) Take 0.1g of polyvinylpyrrolidone (average relative molecular weight: 45000), 2ml of methyl methacrylate monomer, and 100mL of distilled water, mix them with ultrasonic intensity of 20kHz for 20min at room temperature, and then ultrasonically for 30min with ultrasonic intensity of 500kHz. After the solution is clarified, add 0.05g of ammonium persulfate, and then stir at 40°C for 10 hours at a stirring speed of 500rpm to obtain an emulsion containing polymethyl methacrylate microspheres, which is filtered and dried to obtain an average particle size of Polymethyl methacrylate microspheres of about 200nm;

[0040] (2) Get the polymethyl methacrylate microsphere 4g obtained above, disperse in the deionized water of 46ml, ultrasonic 30min, make it fully disperse, obtain the polymethyl methacrylate microsphere colloid that concentration is 8wt% solution;

[0041] (3) At 20°C, with a stirring speed of 500rpm, add 0.5g sodium lauryl sulfate to the colloidal solution of p...

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Abstract

The invention discloses a preparation method of a core-shell structure particles of electro-conductive macromolecule coated polymer microspheres, wherein the preparation method includes the steps: (1)mixing a first monomer, polyvinylpyrrolidone and distilled water, adding a first initiator after ultrasonic treatment, carrying out a stirring reaction, and separating to obtain polymethyl methacrylate microspheres; (2) taking the polymethyl methacrylate microspheres to mix with deionized water, carrying out ultrasonic treatment to mix evenly, and preparing a polymethyl methacrylate microsphere colloidal solution with the concentration of 0.5-10 wt%; and (3) adding a surface modifier to the polymethyl methacrylate microsphere colloidal solution at the temperature of 20-50 DEG C, stirring for10-20 h, then adding a second monomer, continuing to stir for 3-10 h at the temperature of 0-10 DEG C, adding a second initiator and hydrochloric acid, carrying out a reaction for 10-24 h at the temperature of 20-50 DEG C, and separating to obtain the product. The invention also provides the core-shell structure particles of the electro-conductive macromolecule coated polymer microspheres preparedby the method.

Description

technical field [0001] The invention belongs to the field of nanoparticle synthesis, and in particular relates to a core-shell structure particle coated with a conductive polymer and a polymer microsphere and a preparation method thereof. Background technique [0002] Core-shell particles are an important part of nanomaterials, in which functional conductive polymers (polypyrrole, polythiophene or polyaniline, etc.) coat template polymer microspheres (polystyrene, polymethylmethacrylate or polypyrrole etc.) to form core-shell particles, which is one of the important research directions for the preparation of core-shell particles. Among them, functional core-shell structure particles form functional composite nanomaterials by combining the excellent properties of two or more substances. Multiphase composite nanomaterials are different from traditional composite materials in that they can exhibit excellent homogeneity at the nanoscale and microscopic scales, and enhance the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/16C08F271/02C08F220/14
CPCC08F271/02C08J7/16C08J2333/12C08J2479/02C08J2479/04C08F220/14
Inventor 于明利孙爱华储成义陈涛许高杰晏育刚傅黎丽陆祥芳
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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