Single-dispersity and opposite-polarity Janus gel microsphere with core-shell structure, preparation method and microfluid control device used

A technology of polar anisotropy and core-shell structure, which is applied in the preparation of microspheres, microcapsule preparations, chemical instruments and methods, etc., to achieve the effects of uniform particle size, easy assembly and disassembly, and high yield.

Inactive Publication Date: 2014-06-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the successful preparation of such microspheres at home and abroad.

Method used

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  • Single-dispersity and opposite-polarity Janus gel microsphere with core-shell structure, preparation method and microfluid control device used
  • Single-dispersity and opposite-polarity Janus gel microsphere with core-shell structure, preparation method and microfluid control device used
  • Single-dispersity and opposite-polarity Janus gel microsphere with core-shell structure, preparation method and microfluid control device used

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Mix 19.2g TPGDA and 0.8g HCPK, dissolve with magnetic stirring, and make a non-polar dispersed phase solution.

[0050] Take 2g of acrylamide, 0.3g of bisacrylamide, 0.1g of ammonium persulfate, mix them, add 0.1g of sodium dodecylbenzenesulfonate (SDBS), add water to 20g, stir and dissolve with magnetic force, and make polar dispersions respectively. phase solution and polar nucleation phase solution.

[0051] The above-mentioned polar dispersed phase solution, polar nucleation phase solution and non-polar dispersed phase solution were respectively filled into 1 mL syringes, placed on corresponding syringe pumps, and connected to microfluidic control devices. Then take simethicone as the continuous phase solution and place it in a 20mL continuous phase syringe, install it on the continuous phase syringe pump, and connect it to the microfluidic control device. Set the flow rate of the polar dispersed phase solution to 2 μL min-1, the flow rate of the non-polar disperse...

Embodiment 2

[0054] Mix 19.2g TPGDA and 0.8g HCPK, dissolve with magnetic stirring, and make a non-polar dispersed phase solution.

[0055] Take 2g of acrylamide, 0.3g of bisacrylamide, 0.1g of ammonium persulfate, mix them, add 0.1g of sodium dodecylbenzenesulfonate (SDBS), add water to 20g, stir and dissolve with magnetic force, and make polar dispersions respectively. phase solution and polar nucleation phase solution.

[0056] The above-mentioned polar dispersed phase solution, polar nucleation phase solution and non-polar dispersed phase solution were respectively filled into 1 mL syringes, placed on corresponding syringe pumps, and connected to microfluidic control devices. Then take simethicone as the continuous phase solution and place it in a 20mL continuous phase syringe, install it on the continuous phase syringe pump, and connect it to the microfluidic control device. Set the flow rate of the polar dispersed phase solution to 2 μL min-1, the flow rate of the non-polar disperse...

Embodiment 3

[0059] Mix 19.2g TPGDA and 0.8g HCPK, dissolve with magnetic stirring, and make a non-polar dispersed phase solution.

[0060] Take 2g of acrylamide, 0.3g of bisacrylamide, 0.1g of ammonium persulfate, mix them, add 0.1g of sodium dodecylbenzenesulfonate (SDBS), add water to 20g, stir and dissolve with magnetic force, and make polar dispersions respectively. phase solution and polar nucleation phase solution.

[0061] The above-mentioned polar dispersed phase solution, polar nucleation phase solution and non-polar dispersed phase solution were respectively filled into 1 mL syringes, placed on corresponding syringe pumps, and connected to microfluidic control devices. Then take simethicone as the continuous phase solution and place it in a 20mL continuous phase syringe, install it on the continuous phase syringe pump, and connect it to the microfluidic control device. Set the flow rate of the polar dispersed phase solution to 2 μL min-1, the flow rate of the non-polar disperse...

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Abstract

The invention discloses a single-dispersity and opposite-polarity Janus gel microsphere with a core-shell structure, a preparation method and a microfluid control device used. The preparation method is characterized by comprising the following steps that two types of polar and non-polar dispersed phase solution, polar core-forming phase solution and continuous phase solution are prepared; firstly under the shearing action of the non-polar dispersed phase solution, the polar core-forming phase forms polar core drops in the non-polar dispersed phase solution; then under the shearing action of the non-polar dispersed phase solution, the polar dispersed phase solution and the non-polar dispersed phase solution are contacted to form two semispherical Janus drops with different polarities; and at the moment, the non-polar semispheres contain the polar core drops. The single-dispersity and opposite-polarity Janus gel microsphere disclosed by the invention has the advantages that the flow of the core-forming phase solution is controlled, the polar cores in the non-polar parts of the opposite-polarity Janus drops with the core-shell structures can be controlled; the flow ratio of the polar dispersed phase to the non-polar dispersed phase is controlled, so that the appearance of the opposite-polarity Janus drops with the core-shell structures can be controlled; the single-dispersity and opposite-polarity Janus gel microsphere with the size range being 500-600mum and the dispersion coefficient CV being less than 3% can be obtained by curing the drops.

Description

technical field [0001] The invention relates to the field of preparation of polar heterogeneous Janus core-shell structure gel microspheres, in particular to a monodisperse polar heterogeneity Janus core-shell structure microspheres with controllable morphology and core quantity, its preparation method and the device used . Background technique [0002] Janus particles refer to asymmetric particles that contain two different chemical compositions or have different properties on the surface, which are manifested in the differences in mechanical properties, magnetic properties, optical properties, electrical properties, and surface hydrophilic and hydrophobic properties (polarity) on both sides of the particles. Due to the asymmetric nature of the two parts, Janus particles have an additional directional force, and with the help of this directional force, the spatial assembly of particles can be realized. Due to the new ideas brought by the special physical and chemical prope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02B01J19/00
Inventor 常振旗吴林军
Owner UNIV OF SCI & TECH OF CHINA
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