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Preparation method for assembling large-area ordered microsphere template by liquid level swirl method

A large-area, vortex technology, applied in the field of preparation of large-area ordered microsphere templates assembled by liquid surface vortex method, can solve the problems of difficult to obtain large-area ordered microsphere arrays, long preparation time, complicated process, etc., and achieve raw materials Wide range of sources, simple preparation process, and high application value

Inactive Publication Date: 2011-11-09
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the research of Goldenberg et al., it is difficult to obtain a large area of ​​denser ordered microsphere arrays on the surface of the aqueous solution by dropping and transferring the film, especially for microspheres with larger particle sizes. When it is applied, the sluggish fluidity of large particles will lead to the uneven distribution of particles on the liquid surface, and the simple film transfer technology can easily cause the rupture of the liquid film layer
[0007] The existing methods for preparing two-dimensional ordered templates are complex, take a long time to prepare, and are difficult. It is still difficult to prepare two-dimensional ordered microsphere templates with specific structures in a convenient and controllable manner so far.

Method used

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  • Preparation method for assembling large-area ordered microsphere template by liquid level swirl method
  • Preparation method for assembling large-area ordered microsphere template by liquid level swirl method
  • Preparation method for assembling large-area ordered microsphere template by liquid level swirl method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 49.5ml of ethanol, 4.88ml of water and 1g of PVP mixed solution into a 250ml three-necked flask, heat it in a water bath to 70°C, pass in nitrogen protection, stir for a certain period of time, and then add 5.5ml of washed styrene by one-time pouring 1. Initiator AIBN 0.05g, after reacting for 24 hours, take out the emulsion and centrifuge, discard the supernatant, use ethanol to ultrasonically wash, repeat several times, and collect the final emulsion for later use. Characterized by scanning electron microscopy, the particle size of the prepared microspheres was 1.33 μm. Inject a certain amount of ultrapure water into an open container, and place a clean hollow Teflon plastic ring on the water surface. Use the stirring of the magnet to generate a stable vortex on the water surface, and slowly drop the PS microsphere emulsion dispersed with ethanol on the surface of the swirling deionized water until a dense PS microsphere film is formed on the surface of the water....

Embodiment 2

[0029]Add 91.14ml of ethanol and 0.81g of PVP mixed solution into a 250ml three-necked flask, heat it in a water bath to 70°C, pass through nitrogen protection, stir for a certain period of time, and add 30.87ml of washed styrene at a dropping rate of 99.53μL / s 1. Initiator AIBN 0.28g, after reacting for 24 hours, take out the emulsion and centrifuge, discard the supernatant, use ethanol to ultrasonically wash, repeat several times, and collect the final emulsion for later use. Characterized by scanning electron microscopy, the particle size of the prepared microspheres was 5.21 μm. Inject a certain amount of ultrapure water into an open container, and place a clean hollow Teflon plastic ring on the water surface. Use the stirring of the magnet to generate a stable vortex on the water surface, and slowly drop the PS microsphere emulsion dispersed with ethanol on the surface of the swirling deionized water until a dense PS microsphere film is formed on the surface of the water....

Embodiment 3

[0031] Add 86.08ml of ethanol and 0.96g of PVP mixed solution into a 250ml three-necked flask, heat it in a water bath to 70°C, pass through nitrogen protection, stir for a certain period of time, then add 35.28ml of washed styrene at a rate of 87μL / s, Initiator AIBN 0.32g, after 24 hours of reaction, take out the emulsion and centrifuge, discard the supernatant, use ethanol to ultrasonically wash, repeat several times, and collect the final emulsion for later use. Characterized by scanning electron microscopy, the particle size of the prepared microspheres was 7.09 μm. Inject a certain amount of ultrapure water into an open container, and place a clean hollow Teflon plastic ring on the water surface. Use the blowing pipe to adjust the angle to blow to the water surface to generate a stable vortex, and slowly drop the PS microsphere emulsion dispersed with ethanol on the surface of the swirling deionized water until a dense PS microsphere film is formed on the surface of the w...

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Abstract

The invention relates to technology for preparing large-area ordered microsphere template assembled by a liquid surface eddy method, which prepares monodisperse polystyrene microspheres from monodisperse polystyrene microsphere emulsion through dispersion polymerization. Firstly, a certain amount of ultrapure water is filled in an open container, and a clean hollow Teflon plastic ring is placed on the water surface, and a stable eddy is generated through the stirring of a magneton or by a small-sized air blowing device; secondly, the monodisperse polystyrene microsphere emulsion is dropwise added onto the eddy water surface by a microinjector till a compact microsphere layer is formed in the hollow Teflon plastic ring, the eddy liquid surface is reduced to horizontal plane and the turbid liquid under the liquid surface is discharged out and the ultrapure water is filled into the contained; and finally, a substrate is immersed under the liquid surface and then pulled out by a lifting and pulling device to be dried at 80 DEG C, and thus the ordered microsphere template is obtained. A dried primary array membrane-plated sample is immersed under the liquid surface again for secondary array membrane plating to obtain a double-layer array structure, and the operation is carried out repeatedly to obtain a multilayer microsphere array.

Description

technical field [0001] The invention relates to a method for preparing a two-dimensional ordered microsphere template, in particular to a preparation method for assembling a large-area ordered microsphere template by a liquid surface vortex method. Background technique [0002] The two-dimensional ordered template has high application value due to its unique structure, and has been widely used in catalysis, optoelectronic information technology and other fields. The current template technology mainly includes AAO template, photolithography technology, electron beam etching technology and micro Ball template technology, etc. Microsphere template technology is a relatively economical, convenient and practical template technology developed in the past ten years. The line width of the template is only related to the particle size of the microspheres used, which can reach the nanometer level. The preparation methods reported to obtain two-dimensional ordered polymer templates ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05C3/10B05C3/04B05D1/20C30B29/64C30B29/68
Inventor 王天民朱海玲张俊英潘锋祁洪飞郝维昌
Owner BEIHANG UNIV
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