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Related Concept Videos

Classification and Mechanical Properties of Synthetic Polymers01:28

Classification and Mechanical Properties of Synthetic Polymers

Synthetic polymers are classified as elastomers, fibers, or plastics based on their crystallinity. Crystallinity, the degree of long-range order in the solid state, influences the mechanical properties (stretching or contracting) of elastomers. Elastomers are flexible polymers that can expand or contract easily upon the application of an external force. They have numerous crosslinks that pull them back into their original shape when stress is removed. Silicones, for instance, are highly elastic...
Olefin Metathesis Polymerization: Overview01:13

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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...

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Electroactive Polymer Nanoparticles Exhibiting Photothermal Properties
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Published on: January 8, 2016

Methods for activating and characterizing mechanically responsive polymers.

Kelly M Wiggins1, Johnathan N Brantley, Christopher W Bielawski

  • 1Department of Chemistry and Biochemistry, The University of Texas at Austin, Austin, TX 78712, USA.

Chemical Society Reviews
|February 8, 2013
PubMed
Summary
This summary is machine-generated.

Mechanically responsive polymers use mechanical energy for chemical changes, enabling force sensing and self-healing. This review covers methods for applying force to polymers and their characterization.

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Area of Science:

  • Polymer Science and Engineering
  • Materials Science
  • Mechanochemistry

Background:

  • Mechanically responsive polymers convert mechanical energy into chemical changes.
  • These polymers offer functionalities like force sensing (mechanochromism) and self-healing.
  • Mechanical activation is a key process for unlocking polymer capabilities.

Purpose of the Study:

  • To review methods for applying mechanical force to polymers.
  • To discuss techniques for characterizing polymers activated by mechanical force.
  • To highlight the advantages and challenges of various mechanical activation techniques.

Main Methods:

  • Utilizing a range of solution- and solid-state techniques to apply mechanical force.
  • Employing diverse forces and strain rates for polymer activation.
  • Integrating optical spectroscopy and chemical labeling for in situ characterization.

Main Results:

  • Various methods exist for mechanically activating polymers.
  • Characterization techniques allow for the study of mechanically induced transformations.
  • Different techniques offer unique advantages and present specific challenges.

Conclusions:

  • Mechanical force is a versatile tool for polymer modification and functionalization.
  • Understanding activation methods and characterization is crucial for advancing mechanically responsive polymers.
  • Further research can optimize techniques for broader applications in materials science.