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Related Concept Videos

Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

2.5K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
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Polymer Classification: Architecture01:14

Polymer Classification: Architecture

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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
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Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

3.0K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
3.0K
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
Polymers02:34

Polymers

35.8K
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...
35.8K
Polymer Classification: Stereospecificity01:26

Polymer Classification: Stereospecificity

2.4K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
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Related Experiment Video

Updated: Jul 6, 2025

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
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Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

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Thermodynamically stable plumber's nightmare structures in block copolymers.

Hojun Lee1, Sangwoo Kwon2, Jaemin Min1

  • 1Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.

Science (New York, N.Y.)
|January 4, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method to create stable, complex network nanostructures from block copolymers. This breakthrough enables precise control over material properties for advanced nanotechnology applications.

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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

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

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Related Experiment Videos

Last Updated: Jul 6, 2025

Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules
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Gyroid Nickel Nanostructures from Diblock Copolymer Supramolecules

Published on: April 28, 2014

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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
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Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

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

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Area of Science:

  • Polymer Science
  • Materials Science
  • Nanotechnology

Background:

  • Block copolymer self-assembly yields diverse nanostructures like spheres, cylinders, and networks.
  • Achieving thermodynamically stable network structures with high packing frustration is challenging.
  • Precise control over nanoscale properties and functionalities is crucial for advanced applications.

Purpose of the Study:

  • To develop a methodology for accessing diverse network structures from diblock copolymers.
  • To investigate the factors influencing the stability of different network phases.
  • To establish a platform for creating tailored block copolymer-based nanomaterials.

Main Methods:

  • Utilizing end group and linker chemistry in diblock copolymers.
  • Investigating the self-assembly of block copolymers into network phases.
  • Analyzing the interplay between polymer chain end interactions and curvature.

Main Results:

  • Successfully accessed diverse network structures including gyroid, diamond, and primitive phases.
  • Identified that medial packing of polymer chain ends (plumber's nightmare structure) can be more stable than skeletal aggregation (gyroid).
  • Attributed stability to the balance between end-end interaction strength and initial curvature.

Conclusions:

  • A novel approach to create tailored network structures from block copolymers has been established.
  • The findings provide a platform for utilizing block copolymers in nanotechnology.
  • Understanding the factors governing network stability is key for designing advanced materials.