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Velcrand Functionalized Polyethylene.

Jonathan Tellers1, Jérôme Vachon2, Maria Soliman3

  • 1Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, and INSTM, UdR Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy. jonathan.tellers@studenti.unipr.it.

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|March 8, 2019
PubMed
Summary
This summary is machine-generated.

Researchers incorporated velcrands, a type of self-dimerizing cavitand, into polymers. This created novel materials with enhanced oxygen barrier properties, demonstrating their potential for advanced applications.

Keywords:
PE-HEMApolyethylenequinoxaline cavitandvelcrand

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Area of Science:

  • Supramolecular Chemistry
  • Polymer Science
  • Materials Science

Background:

  • Velcrands are cavitands designed for self-dimerization via complementary surfaces.
  • Physical cross-linking in polymers can enhance material properties.
  • Developing novel cross-linking strategies is crucial for advanced materials.

Purpose of the Study:

  • To integrate velcrands as physical cross-linking units into a polymer matrix.
  • To synthesize and characterize velcrand-functionalized polymers.
  • To evaluate the oxygen barrier properties of the resulting materials.

Main Methods:

  • Functionalization of velcrands with isocyanate groups.
  • Reaction of functionalized velcrands with poly(ethylene-co-(2-hydroxethylmethacrylate)) (PE-HEMA).
  • Characterization using NMR, DSC, and FTIR spectroscopy.
  • Fabrication of polymer films via solution casting.

Main Results:

  • Successful introduction of velcrands into the PE-HEMA polymer backbone.
  • Confirmation of velcrand incorporation through spectroscopic analysis (NMR, FTIR).
  • Demonstration of polymer processability into films with varying velcrand content.
  • Measurement of oxygen barrier properties of the functionalized films.

Conclusions:

  • Velcrands can be effectively incorporated into polymers as physical cross-linkers.
  • The functionalized polymers exhibit good processability into films.
  • The velcrand-polymer system shows potential for applications requiring enhanced oxygen barrier performance.