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Polymer microparticle and preparation method thereof

A polymer and microparticle technology, applied in the field of polymer microparticles and its preparation, can solve the problems of difficult size control, poor material scalability, and low production efficiency, so as to achieve simple and easy control of the process, increase the reuse rate, and produce high efficiency effect

Active Publication Date: 2021-05-11
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a polymer microparticle and its preparation method, the preparation process is simple and easy to control, and does not need to use any additional initiators, emulsifiers and post-modifications, effectively solving the existing problems Problems such as low production efficiency, poor material scalability and difficult size control in the technology

Method used

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  • Polymer microparticle and preparation method thereof
  • Polymer microparticle and preparation method thereof
  • Polymer microparticle and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A kind of polymer particle, its preparation method comprises the following steps:

[0039] (1) prepare super-amphiphobic coating on glass surface by candle soot template method; The specific steps of preparing super-amphiphobic coating include:

[0040] (1.1) Hold and move the glass slide substrate (30mm*30mm*0.17mm) in the flame of a burning candle for 2 minutes to form a uniform layer of black candle smoke, and then transfer it to a desiccator where the Vacuumize the open container with 4mL tetraethoxysilane solution and 4mL ammonia solution respectively, and carry out chemical vapor deposition for 24h to obtain silicon dioxide particles;

[0041] (1.2) The silica particles obtained in step (1.1) were calcined at 550° C. for 3 h, and then perfluorinated with 200 μL of trichloro(1H, 1H, 2H, 2H perfluorooctyl) silane chemical vapor deposition for 2 h to obtain Super amphiphobic coating;

[0042] (2) Add 3.5g of polyoxyethylene powder (molecular weight: 5 million) into...

Embodiment 2

[0047] A kind of polymer particle, its preparation method comprises the following steps:

[0048] (1) prepare super-amphiphobic coating on glass surface by candle soot template method; The specific steps of preparing super-amphiphobic coating include:

[0049] (1.1) Hold and move the glass slide substrate (30mm*30mm*0.17mm) in the flame of a burning candle for 2 minutes to form a uniform layer of black candle smoke, and then transfer it to a desiccator where the Vacuumize the open container with 4mL tetraethoxysilane solution and 4mL ammonia solution respectively, and carry out chemical vapor deposition for 24h to obtain silicon dioxide particles;

[0050] (1.2) The silica particles obtained in step (1.1) were calcined at 550° C. for 3 h, and then perfluorinated with 200 μL of trichloro(1H, 1H, 2H, 2H perfluorooctyl) silane chemical vapor deposition for 2 h to obtain Super amphiphobic coating;

[0051] (2) Add 3g of polyoxyethylene powder (molecular weight: 5 million) into 9...

Embodiment 3

[0056] A kind of polymer particle, its preparation method comprises the following steps:

[0057] (1) prepare super-amphiphobic coating on glass surface by candle soot template method; The specific steps of preparing super-amphiphobic coating include:

[0058] (1.1) Hold and move the glass slide substrate (30mm*30mm*0.17mm) in the flame of a burning candle for 2 minutes to form a uniform layer of black candle smoke, and then transfer it to a desiccator where the Vacuumize the open container with 4mL tetraethoxysilane solution and 4mL ammonia solution respectively, and carry out chemical vapor deposition for 24h to obtain silicon dioxide particles;

[0059] (1.2) The silica particles obtained in step (1.1) were calcined at 550° C. for 3 h, and then perfluorinated with 200 μL of trichloro(1H, 1H, 2H, 2H perfluorooctyl) silane chemical vapor deposition for 2 h to obtain Super amphiphobic coating;

[0060] (2) Add 2.5g of polyoxyethylene powder (molecular weight: 5 million) into...

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Abstract

The invention provides a polymer microparticle and a preparation method thereof, and the preparation method comprises the following steps: preparing a super-amphiphobic coating on the surface of glass through a candle ash template method; preparing a polymer solution; collecting a liquid column of the polymer solution obtained in the step (2) on the surface of the super-amphiphobic coating obtained in the step (1) by using an injection pump and a microfluidic rotating device, and spontaneously forming polymer liquid drops; and carrying out in-situ evaporation on the polymer liquid drops obtained in the step (3) to obtain the polymer microparticles. The invention also comprises the polymer microparticles prepared by the method. According to the method, fluid instability, a super-amphiphobic surface and a polymer liquid column are combined, and a large number of polymer microparticles are rapidly synthesized on the surface with the super-amphiphobic coating as the substrate. The whole preparation process has general applicability, is high in expandability and simple and convenient to operate, does not need any additional initiator, emulsifier and post-modification, and has a wide application prospect in the field of polymer micro-materials.

Description

technical field [0001] The invention belongs to the technical field of polymer microprocessing, and in particular relates to a polymer microparticle and a preparation method thereof. Background technique [0002] Polymer microparticles refer to spherical polymer microspheres or microgels with diameters ranging from nanometers to micrometers. The large span of polymer particles on the micro-nano scale and the freedom of various shapes in the structure make them unique and important in the fields of biology, medicine, environment, and chemical engineering, such as for targeted drug release and cell recognition. , Carrier recovery, and micro-reaction vessels are of great research and application significance, and recently have gradually shown amazing application potential in the fields of electronics and machinery. [0003] At present, most of the synthesis methods of polymer particles are based on chemical synthesis under solution conditions, which can be roughly divided into...

Claims

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Application Information

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IPC IPC(8): C08J3/16C08L71/02
CPCC08J3/16C08J2371/02
Inventor 邓旭宋佳宁王德辉
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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