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Related Concept Videos

The Colloidal State01:29

The Colloidal State

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 the...
Solid–Solid Solutions01:24

Solid–Solid Solutions

The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Colloids03:22

Colloids

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...
Phase Diagrams of Ternary Systems01:28

Phase Diagrams of Ternary Systems

Consider a ternary system, which is composed of three components: water (W), ethanoic acid (E), and trichloromethane (T). Here, Ethanoic acid (E) is fully miscible with both water (W) and trichloromethane (T), meaning it can mix entirely with either of them. However, water and trichloromethane have partial miscibility, meaning they can only mix to a certain extent, beyond which two separate phases will form.The phase diagram of a ternary system is represented as an equilateral triangle, where...
Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

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Related Experiment Video

Updated: May 31, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Ultrasoft colloid-polymer mixtures: structure and phase diagram.

B Lonetti1, M Camargo, J Stellbrink

  • 1JCNS-1 and ICS-1, Forschungszentrum Jülich, Jülich, Germany.

Physical Review Letters
|June 28, 2011
PubMed
Summary
This summary is machine-generated.

Researchers studied ultrasoft colloids and polymer chains using neutron scattering and liquid theory. Effective interactions accurately predicted experimental pair correlations and phase behavior without parameters.

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Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
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Synthesis and Characterization of Supramolecular Colloids
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Synthesis and Characterization of Supramolecular Colloids

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Related Experiment Videos

Last Updated: May 31, 2026

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
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Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
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Synthesis and Characterization of Supramolecular Colloids
09:26

Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

Area of Science:

  • Colloid and Polymer Science
  • Soft Matter Physics
  • Materials Science

Background:

  • Understanding the behavior of complex fluid mixtures is crucial in materials science.
  • Binary mixtures of colloids and polymers present unique phase behaviors and interactions.
  • Accurate theoretical models are needed to predict and control these behaviors.

Purpose of the Study:

  • To investigate the phase behavior and interactions in binary mixtures of ultrasoft colloids and linear polymer chains.
  • To validate recently developed effective interaction models for colloid-polymer systems.
  • To achieve quantitative agreement between experimental data and theoretical predictions.

Main Methods:

  • Small-angle neutron scattering (SANS) was used to probe the structure of the mixtures.
  • Liquid state theory was employed to model the interactions and predict system behavior.
  • A coarse-grained approach modeled both colloids and polymers as point particles.

Main Results:

  • Experimental data were accurately described by the effective interaction models.
  • The models provided quantitative, parameter-free agreement for pair correlations.
  • Phase behavior and the concentration dependence of interaction length were successfully predicted.

Conclusions:

  • The developed effective interactions provide a robust framework for understanding ultrasoft colloid-polymer mixtures.
  • This approach enables accurate prediction of complex fluid behavior.
  • The findings advance the theoretical modeling of soft matter systems.