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Related Concept Videos

Step-Growth Polymerization: Overview01:03

Step-Growth Polymerization: Overview

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...
Radical Chain-Growth Polymerization: Chain Branching01:17

Radical Chain-Growth Polymerization: Chain Branching

The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Radical Chain-Growth Polymerization: Overview01:10

Radical Chain-Growth Polymerization: Overview

Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...

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Related Experiment Video

Updated: Jun 4, 2026

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions
06:56

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions

Published on: October 10, 2013

Synthesis of robust raspberry-like particles using polymer brushes.

Nikolay Puretskiy1, Leonid Ionov

  • 1Leibniz Institute of Polymer Research Dresden , Hohe Str. 6, D-01069 Dresden, Germany.

Langmuir : the ACS Journal of Surfaces and Colloids
|February 15, 2011
PubMed
Summary

Chemically and mechanically robust raspberry-like particles were synthesized for advanced coatings. These particles demonstrate structural integrity in solvents and enable the creation of ultrahydrophobic surfaces.

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Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
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Published on: June 20, 2019

Related Experiment Videos

Last Updated: Jun 4, 2026

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions
06:56

Particles without a Box: Brush-first Synthesis of Photodegradable PEG Star Polymers under Ambient Conditions

Published on: October 10, 2013

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
13:57

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers
11:42

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

Area of Science:

  • Materials Science
  • Surface Chemistry
  • Nanotechnology

Background:

  • Development of robust micro/nanoparticles is crucial for advanced material applications.
  • Controlling surface morphology and properties is key for functional coatings.
  • Existing methods may lack the required chemical and mechanical stability for demanding environments.

Purpose of the Study:

  • To synthesize robust raspberry-like particles with potential for coating applications.
  • To investigate the structural stability of these particles under various conditions.
  • To demonstrate the fabrication of ultrahydrophobic surfaces using these novel particles.

Main Methods:

  • Raspberry-like particles synthesized by immobilizing silica nanoparticles onto poly(glycidyl methacrylate) brush-coated silica microparticles.
  • Structural integrity assessed via ultrasonication and exposure to organic solvents.
  • Ultrahydrophobic surfaces fabricated by immobilizing poly(pentafluorostyrene) onto the raspberry-like particles.

Main Results:

  • Successfully synthesized chemically and mechanically robust raspberry-like particles.
  • Particles maintained structural integrity after ultrasonication and organic solvent exposure.
  • Demonstrated the ability to create ultrahydrophobic surfaces using these particles.

Conclusions:

  • The synthesized raspberry-like particles offer excellent structural robustness.
  • These particles are suitable substrates for immobilization on polymers.
  • The developed method provides a pathway for fabricating functional ultrahydrophobic surfaces.