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A kind of polystyrene-acrylic acid polymer microsphere and preparation method thereof

A technology of acrylic polymer and polystyrene, applied in the field of polymer microsphere science and application, can solve the problems of difficult control of reaction conditions, uneven particle size of microspheres, and irregular arrangement of space matrix, etc., and achieve great application potential , Regular and orderly structure, low cost of raw materials

Inactive Publication Date: 2018-11-06
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Polystyrene-acrylic acid type polymer microspheres have application prospects as mentioned above, but there are many deficiencies in the prior art, and there is difficulty in controlling the reaction conditions of the emulsion polymerization method used to prepare nanoscale polystyrene-acrylic acid type polymer microspheres. The particle size of the prepared microspheres is not uniform, the space matrix arrangement is irregular and many other problems

Method used

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  • A kind of polystyrene-acrylic acid polymer microsphere and preparation method thereof
  • A kind of polystyrene-acrylic acid polymer microsphere and preparation method thereof
  • A kind of polystyrene-acrylic acid polymer microsphere and preparation method thereof

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Embodiment 1

[0025] A polystyrene-acrylic acid polymer microsphere is prepared by the following method:

[0026] (1) Preparation of polystyrene-acrylic acid latex particles: styrene and acrylic acid are mixed according to the molar ratio of 20:1, after fully stirring and mixing at room temperature, add sodium dodecylbenzenesulfonate (dodecylbenzenesulfonate) The mass ratio of sodium alkylbenzene sulfonate to styrene monomer is 0.02:1) for pre-emulsification, and then slowly increase the temperature. During the temperature rise from 50°C to 80°C, add 3 parts of potassium persulfate solution dropwise in 3 times , and then the temperature was raised to 85°C, kept for 2 hours, and then 4 parts of potassium persulfate solution was added dropwise, and the reaction was continued for 1 hour. After the reaction, the product was washed by centrifugation to obtain polystyrene-acrylic acid latex particles, which were white solid powder ; The mass ratio of the quality of potassium persulfate in the 7 p...

Embodiment 2

[0030] A polystyrene-acrylic acid polymer microsphere is prepared by the following method:

[0031] (1) Preparation of polystyrene-acrylic acid latex particles: styrene and acrylic acid are mixed according to the molar ratio of 30:1, after fully stirring and mixing at room temperature, add sodium dodecylbenzenesulfonate (dodecylbenzenesulfonate) The mass ratio of sodium alkylbenzenesulfonate to styrene monomer is 0.02:1) for pre-emulsification, and then slowly increase the temperature. During the temperature rise from 50°C to 80°C, add 3 parts of ammonium persulfate solution dropwise in 3 times , then the temperature was raised to 85°C, kept for 2 hours, and then 4 parts of ammonium persulfate solution was added dropwise, and the reaction was continued for 2 hours. After the reaction, the product was washed by centrifugation to obtain polystyrene-acrylic acid latex particles, which were white solid powder ; The quality of ammonium persulfate in the 7 parts of ammonium persulfa...

Embodiment 3

[0035] A polystyrene-acrylic acid polymer microsphere is prepared by the following method:

[0036](1) Preparation of polystyrene-acrylic acid latex particles: styrene and acrylic acid are mixed according to the molar ratio of 40:1. After fully stirring and mixing at room temperature, add sodium dodecylsulfonate (dodecane The mass ratio of sodium sulfonate to styrene monomer is 0.02:1) for pre-emulsification, and then slowly raise the temperature. During the temperature rise from 50°C to 80°C, add 3 parts of azobisisobutyronitrile dropwise in 3 times solution, then the temperature was raised to 85°C, and the reaction was kept for 2.5 hours, and then 4 parts of azobisisobutyronitrile solution was added dropwise, and the reaction was continued for 1 hour. After the reaction, the product was centrifugally washed with water to obtain polystyrene-acrylic acid latex particles , is a white solid powder; the mass ratio of azobisisobutyronitrile mass to styrene monomer in the 7 parts o...

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Abstract

The invention belongs to the field of science and application of polymer microspheres and particularly relates to polystyrene-acrylic polymer microspheres and a preparation method thereof. The preparation method of the polymer microspheres comprises steps as follows: polystyrene-acrylic emulsion particles are prepared through a soap-free emulsion polymerization reaction of styrene monomers and acrylic monomers, and after the polystyrene-acrylic emulsion particles are dispersed into an emulsion, the polystyrene-acrylic polymer microspheres are further prepared with a silicone oil deposition method. Compared with traditional polymer microspheres, the polystyrene-acrylic polymer microspheres prepared with the method have characteristics of uniform particle size, small particle size, large specific surface area, regular and ordered structure, high adsorbability, high coacervation, high surface reaction capacity and the like and have greater application potential in biochemistry, analytical chemistry, medical immunology and some high-tech fields.

Description

technical field [0001] The invention belongs to the field of polymer microsphere science and application, and specifically relates to a polystyrene-acrylic acid polymer microsphere and a preparation method thereof. Background technique [0002] Polystyrene (PS) microspheres are a widely used material for preparing photonic crystals, because the preparation method of polystyrene microspheres is simple, the monodispersity is good, and the particle size is controllable; polystyrene and inorganic oxidation The difference in the physical and chemical properties of the material makes it very easy to remove it as a template; the polystyrene material has good mechanical properties, which makes it a good application in the preparation of modulated photonic crystals. Monodisperse nanoscale polystyrene-acrylic acid polymer microspheres have the advantages of regular shape, uniform particle size, good surface reaction ability and easy functionalization, etc. research and application va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/06C08F2/26B01J13/04
CPCB01J13/04C08F2/26C08F212/08C08J2325/14C08J2483/04C08F220/06
Inventor 周爱军张奇孙义民昝飞陈柳
Owner WUHAN INSTITUTE OF TECHNOLOGY
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