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Method for preparing water-supported microcapsule based on liquid marbles

A technology of liquid marbles and microcapsules, which is applied in the field of preparation of water-carrying microcapsules, can solve the problems of poor operability and rupture of liquid marbles, and achieve the effects of low cost, avoiding rupture, and simple method

Inactive Publication Date: 2017-07-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of directly coating the surface of the liquid marble with a light-cured coating has poor operability, and the implementation process is likely to cause the liquid marble to break

Method used

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  • Method for preparing water-supported microcapsule based on liquid marbles
  • Method for preparing water-supported microcapsule based on liquid marbles
  • Method for preparing water-supported microcapsule based on liquid marbles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, add 20 μL of pure water dropwise with a micro-injector to a petri dish covered with hydrophobic silica powder, then shake the petri dish so that the surface of the droplet is fully covered by silica powder to form liquid marbles; then Put the liquid marbles in a freezer with a temperature of minus 20 degrees, and place them for 6 hours to allow the liquid marbles to fully freeze; then put the frozen liquid marbles into α-methyl cyanoacrylate instant adhesive, take them out, and instantly The dry glue is cured quickly, and the liquid marbles whose surface is "encapsulated" by the instant adhesive are obtained; finally, the surface of the "encapsulated" liquid marbles is dipped and coated with a light-curing coating, and irradiated by a 365nm LED lamp for 3 minutes for light curing Cross-linking to obtain water-loaded microcapsules, wherein the light-cured coating is composed of epoxy soybean oil acrylic resin and pentaerythritol triacrylate diluent in a mass ratio ...

Embodiment 2

[0033]First, add 20 μL of pure water dropwise with a micro-injector to a petri dish covered with hydrophobic silica powder, then shake the petri dish so that the surface of the droplet is fully covered by silica powder to form liquid marbles; then Put the liquid marbles in a freezer with a temperature of minus 20 degrees, and place them for 6 hours to allow the liquid marbles to fully freeze; then put the frozen liquid marbles into α-methyl cyanoacrylate instant adhesive, take them out, and instantly The dry glue is cured quickly, and the liquid marbles whose surface is "encapsulated" by the instant adhesive are obtained; finally, the surface of the "encapsulated" liquid marbles is dipped and coated with a light-curing coating, and irradiated by a 365nm LED lamp for 3 minutes for light curing Cross-linking to obtain water-carrying microcapsules, wherein the photocurable coating is composed of epoxy soybean oil acrylic resin and pentaerythritol triacrylate diluent in a mass rati...

Embodiment 3

[0035] First, add 50 μL of pure water dropwise with a micro-injector to a petri dish covered with hydrophobic silica powder, then shake the petri dish so that the surface of the droplet is fully covered by silica powder to form a liquid marble; then Put the liquid marbles in a freezer with a temperature of minus 20 degrees, and place them for 6 hours to allow the liquid marbles to fully freeze; then put the frozen liquid marbles into α-methyl cyanoacrylate instant adhesive, take them out, and instantly The dry glue is cured quickly, and the liquid marbles whose surface is "encapsulated" by the instant adhesive are obtained; finally, the surface of the "encapsulated" liquid marbles is dipped and coated with a light-curing coating, and irradiated by a 365nm LED lamp for 3 minutes for light curing Cross-linking to obtain water-loaded microcapsules, wherein the light-cured coating is composed of epoxy soybean oil acrylic resin and pentaerythritol triacrylate diluent in a mass ratio...

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Abstract

The invention provides a method for preparing water-supported microcapsule based on liquid marbles, which belongs to the technical field of microcapsule preparation. The preparation method comprises the following steps: 1) water-based liquid is dropped according to certain volume to a powder bed formed by hydrophobic particles, the liquid drops are rolled by shaking the powder bed, so that the hydrophobic particles are absorbed on the surface of the liquid drops to prepare the liquid marbles; 2) the liquid marbles are placed under low temperature environment for refrigeration; 3) the surface of the liquid marbles after refrigeration is coated with an instantaneous adhesive, the liquid marbles are sealed; and 4) the surface of the liquid marbles is coated with a light-cured coating layer, and is solidified through ultra violet radiation to obtain the water-supported microcapsule. The method provided by the invention is simple, cost is low, and the method is in favor of industrial production, the prepared water-supported microcapsule has excellent water retention effect, and has wide application prospects in the fields of tobacco, medicine and cosmetic.

Description

technical field [0001] The invention relates to the preparation of water-carrying microcapsules, in particular to a method for preparing water-carrying microcapsules based on liquid marbles, and belongs to the technical field of microcapsule preparation. Background technique [0002] Microcapsules refer to spherical micro-containers or packages that use natural or synthetic polymer materials to wrap solids, gases or liquids as capsule cores. The wrapped substance is called the core material, and the shell wrapped around the core material is called the wall material, and the outer diameter is generally in the order of microns to millimeters. Because of its functions of reducing toxicity, masking bad taste, protecting substances from environmental influences, controlling the release of core materials, prolonging storage period, changing the state of matter for easy portability and transportation, and easy degradation, microcapsules are widely used in medical engineering, texti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/14
CPCB01J13/14
Inventor 魏玮张季鲍文亮曾庆韬井明潇张璐于玺刘晓亚
Owner JIANGNAN UNIV
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