A method for modifying phase inversion of solid particles and stabilizing pickering inverse miniemulsion

A technology of solid particles and fine emulsions, applied in the field of Pickering emulsions, to achieve good dispersion, uniform particle size, and good stability

Active Publication Date: 2020-11-24
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pickering emulsions did not receive much attention initially for two reasons: one is that traditional surfactant emulsifiers can basically adapt to general emulsification problems; the other may be that the application of Pickering emulsion emulsifiers requires the preparation and surface of fine nanoparticles Combination of modification techniques

Method used

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  • A method for modifying phase inversion of solid particles and stabilizing pickering inverse miniemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of ZnO solid particle modification to form lipophilic nanoparticle solid emulsifier:

[0030] At room temperature, dissolve 10 grams of zinc nitrate and 0.1 grams of KH570 in 800 grams of absolute ethanol A solution, and place the ethanol solution in a 250W ultrasonic oscillator. Add dropwise an ethanol solution containing 10 grams of potassium hydroxide (the amount of ethanol is 200 grams) and add a trace amount of 0.1 gram of deionized water for 1 hour, and then ultrasonically oscillate for 1 hour again to form a solid containing modified lipophilic nanoparticles Ethanol solution of emulsifier.

[0031] (2) Modified lipophilic nanoparticles are phase-inverted to become oil-phase dispersed phase solid emulsifiers:

[0032] At room temperature, add 400 grams of toluene and 50 grams of kerosene to 100 grams of step (1) to form a mixed solution in the ethanol solution containing modified lipophilic nanoparticles, and remove the mixed solution by 50 ° C va...

Embodiment 2

[0036] (1) Preparation of ZnO solid particle modification to form lipophilic nanoparticle solid emulsifier:

[0037] At room temperature, dissolve 10 grams of zinc nitrate and 0.3 grams of KH570 in 800 grams of absolute ethanol A solution, and place the ethanol solution in a 250W ultrasonic oscillator. Add dropwise an ethanol solution containing 10 grams of potassium hydroxide (the amount of ethanol is 200 grams) and add a trace amount of 0.1 gram of deionized water for 1 hour, and then ultrasonically oscillate for 1 hour again to form a solid containing modified lipophilic nanoparticles Ethanol solution of emulsifier.

[0038] (2) Modified lipophilic nanoparticles are phase-inverted to become oil-phase dispersed phase solid emulsifiers:

[0039]At room temperature, add 400 grams of toluene and 100 grams of kerosene to 100 grams of step (1) to form a mixed solution in the ethanol solution containing modified lipophilic nanoparticles. ethanol solvent contained in the solution...

Embodiment 3

[0044] (1) Preparation of ZnS and CdS solid particles modified to form lipophilic nanoparticle solid emulsifier:

[0045] At room temperature, 5 g of zinc nitrate, 5 g of cadmium nitrate and 0.3 g of A171 were dissolved in 800 g of absolute ethanol A solution, and the ethanol solution was placed in a 250W ultrasonic oscillator. Add dropwise an ethanol solution containing 10 grams of potassium sulfide (the amount of ethanol is 200 grams) and add a trace amount of 0.1 gram of deionized water, drop for 1 hour, and then ultrasonically oscillate for 1 hour to form a solid emulsion containing modified lipophilic nanoparticles. ethanol solution of the agent.

[0046] (2) Modified lipophilic nanoparticles are phase-inverted to become oil-phase dispersed phase solid emulsifiers:

[0047] At room temperature, add 400 grams of toluene and 100 grams of kerosene to 100 grams of step (1) to form a mixed solution in the ethanol solution containing modified lipophilic nanoparticles. ethanol...

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Abstract

The invention discloses a Pickering inverse miniemulsion using solid particles for stabilizing emulsion particles in the inverse microemulsion and a preparation method thereof. Oleophylic nanoparticles are prepared by using a double-bonded silane coupling agent for grafting and modifying the solid particles; the oleophylic nanoparticles are used as a solid emulsifier, and the solid emulsifier is transformed from an ethanol dispersion phase to an oil dispersion phase; and the Pickering inverse miniemulsion is prepared by stably dispersing water-soluble olefin-bonded unsaturated monomers in a non-polar mixed solvent containing the modified oleophylic nanoparticle solid emulsifier for miniemulsion polymerization. The Pickering inverse miniemulsion prepared by the method has surface functionalmaterial properties, and hybrid materials with different properties can be formed by use of a plurality of solid particles.

Description

technical field [0001] The invention belongs to the fields of solid particle modification, Pickering emulsion, inverse miniemulsion, colloid dispersion and the like, and specifically relates to a method for forming a Pickering emulsion through solid particle modification, phase inversion and stable inverse miniemulsion and colloid control. Background technique [0002] Emulsions stabilized with solid particles are called Pickering emulsions. Pickering emulsions did not receive much attention initially for two reasons: one is that traditional surfactant emulsifiers can basically adapt to general emulsification problems; the other may be that the application of Pickering emulsion emulsifiers requires the preparation and surface of fine nanoparticles A combination of modification techniques. In the past ten years, with the rapid development of nanotechnology, the research on Pickering emulsion has been widely concerned. [0003] The synthesis of polymer-inorganic nanocomposit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/56C08F220/06C08F220/20C08F2/24C08K9/10C08K3/22C08K3/30
CPCC08F2/24C08F120/56C08F220/06C08F220/20C08K3/22C08K3/30C08K9/10C08K2003/2296C08K2003/3009C08K2003/3036
Inventor 张震乾刘芳林永周李坚方必军丁建宁
Owner CHANGZHOU UNIV
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