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Related Concept Videos

Colloids03:22

Colloids

17.5K
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...
17.5K
Colloidal precipitates01:09

Colloidal precipitates

593
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...
593
Colloids and Suspensions01:17

Colloids and Suspensions

1.8K
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 visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
1.8K
Molecular Weight of Step-Growth Polymers01:08

Molecular Weight of Step-Growth Polymers

2.2K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.2K
Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

3.5K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
3.5K
Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

2.9K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
2.9K

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Updated: Jul 9, 2025

Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils
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Polymer Colloids: Moving beyond Spherical Particles.

Marco Lattuada1, Kata Dorbic2

  • 1Department of Chemistry, University of Fribourg, Chemin du Musée 9, CH-1700 Fribourg. marco.lattuada@unifr.ch.

Chimia
|December 9, 2023
PubMed
Summary
This summary is machine-generated.

Scientists are developing advanced methods to create non-spherical polymer colloids. This review summarizes techniques for submicron particle synthesis, exploring their applications and limitations.

Keywords:
Emulsion polymerizationNon-spherical particlesPolymer colloidsSelf-assembly

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Area of Science:

  • Colloid and surface science
  • Polymer chemistry
  • Materials science

Background:

  • Spherical polymer colloids are fundamental in colloid science.
  • There is a growing need for polymer colloids with complex morphologies beyond simple spheres.

Purpose of the Study:

  • To review recent developments in synthesizing non-spherical polymer colloids.
  • To focus on methods applicable to submicron particle sizes.
  • To discuss applications, advantages, and drawbacks of different synthetic approaches.

Main Methods:

  • Exploration of advanced strategies for polymer colloid synthesis.
  • Focus on techniques yielding complex particle morphologies.
  • Review of methods suitable for submicron-sized particles.

Main Results:

  • Summary of various methods for creating advanced polymer colloids.
  • Identification of techniques applicable to submicron particles.
  • Discussion of the utility and challenges of different synthetic routes.

Conclusions:

  • Significant progress has been made in creating diverse polymer colloid shapes.
  • Methods for submicron non-spherical colloids are expanding.
  • Understanding the trade-offs of different methods is crucial for application development.