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Related Concept Videos

Colloids03:22

Colloids

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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The Colloidal State01:29

The Colloidal State

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The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called...
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Multiwalled functional colloidosomes made small and in large quantities via bulk emulsification.

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Researchers developed a high-throughput method for creating robust, multiwalled colloidosomes using bulk emulsification. This scalable technique enables precise control over capsule architecture and magnetic responsiveness for on-demand release applications.

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Area of Science:

  • Materials Science
  • Colloid Science
  • Microencapsulation Technology

Background:

  • Colloidosomes are versatile microcarriers for encapsulation and controlled release, with multilayer shells offering enhanced robustness and defined permeability.
  • Current methods like microfluidic emulsification provide excellent control but lack scalability for high-throughput production.

Purpose of the Study:

  • To develop a scalable, high-throughput method for assembling multiwalled colloidosomes.
  • To enable precise control over colloidosome architecture and introduce magnetic responsiveness.
  • To achieve controllable release of encapsulated molecules from small, Brownian-motion-capable colloidosomes.

Main Methods:

  • Utilized double emulsion templates created through two bulk emulsification steps.
  • Employed interfacially adsorbed particles for emulsion stabilization and architectural control.
  • Varied applied shear forces to control the number of internal compartments within the colloidosomes.

Main Results:

  • Successfully developed a high-throughput, scalable method for producing multiwalled colloidosomes.
  • Demonstrated control over colloidosome architecture, including single or multiple internal compartments.
  • Created magnetically responsive colloidosomes with controllable release properties in a novel size range.
  • Produced large quantities of small colloidosomes exhibiting Brownian motion.

Conclusions:

  • The proposed bulk emulsification method offers a scalable alternative to microfluidics for producing advanced multiwalled colloidosomes.
  • This technique facilitates the creation of functional microcarriers with tunable properties, including magnetic responsiveness and triggered release.
  • The developed colloidosomes are suitable for applications requiring high throughput and precise control over encapsulation and release, such as drug delivery and diagnostics.