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Related Concept Videos

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 Copolymers01:24

Characteristics and Nomenclature of Copolymers

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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: Stereospecificity01:26

Polymer Classification: Stereospecificity

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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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Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

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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.
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Polymers02:34

Polymers

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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...
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Polymers02:34

Polymers

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Updated: Dec 20, 2025

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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"Shape-Coding": Morphology-Based Information System for Polymers and Composites.

Amol V Pansare1, Shraddha Y Chhatre2, Shyam R Khairkar3

  • 1Mechanical Systems Engineering, Swiss Federal Laboratories for Materials Science and Technology-Empa, Dübendorf 8600, Switzerland.

ACS Applied Materials & Interfaces
|May 23, 2020
PubMed
Summary
This summary is machine-generated.

Counterfeit parts in aerospace composites are a problem. This study introduces a new method using embedded nanoparticles to create unique, tamper-proof barcodes for tracking composite parts throughout their lifecycle.

Keywords:
barcodingchemical encryptionepoxy compositesnanoparticle morphology controlsolid-state synthesis

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Aerospace Engineering

Background:

  • Fiber-reinforced composites are crucial in aerospace due to their high strength-to-weight ratio.
  • Counterfeit composite parts pose a significant risk within the aerospace supply chain.
  • Current tracking methods for composite parts are often invasive or insecure.

Purpose of the Study:

  • To develop a universal, non-invasive method for tracking fiber-reinforced composite parts.
  • To create a secure and robust system for part identification throughout the lifecycle.
  • To address the challenge of counterfeit components in aerospace.

Main Methods:

  • A novel, one-step protocol for in situ reduction to fabricate embedded platinum nanostructures.
  • Utilizing controlled nanoparticle morphologies to create unique, data-rich barcodes.
  • Developing a coding methodology capable of encoding vast amounts of information.

Main Results:

  • Successful fabrication of morphology-based barcodes within polymeric composites.
  • Demonstrated a simple, cost-effective, and mild fabrication process.
  • Achieved high data storage capacity, with potential to encode billions to trillions of parts.

Conclusions:

  • The developed method offers a secure and effective solution for tracking composite parts.
  • This nanotechnology-based approach enhances traceability and combats counterfeiting in aerospace.
  • The technique provides a scalable and versatile platform for material identification.