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Poly (ricinoleic acid) based novel thermosetting elastomer.

Hiroki Ebata1, Mayumi Yasuda, Kazunobu Toshima

  • 1Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Japan.

Journal of Oleo Science
|May 13, 2008
PubMed
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Researchers developed a new bio-based thermosetting elastomer from methyl ricinoleate. This novel material, after vulcanization, exhibits promising rubber-like properties suitable for various applications.

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Biomaterials

Background:

  • Development of sustainable and bio-based polymers is crucial for reducing reliance on fossil fuels.
  • Thermosetting elastomers offer unique properties like high strength and thermal stability.
  • Castor oil derivatives, such as methyl ricinoleate, are abundant and renewable resources.

Purpose of the Study:

  • To synthesize a novel bio-based thermosetting elastomer using methyl ricinoleate.
  • To investigate the mechanical properties and curing behavior of the resulting polyricinoleate compounds.
  • To explore the potential of this material as a sustainable alternative to conventional elastomers.

Main Methods:

  • Lipase-catalyzed polymerization of methyl ricinoleate to form polyricinoleate.
  • Vulcanization of carbon black-filled polyricinoleate compounds using sulfur curatives.
  • Evaluation of mechanical properties including hardness, tensile strength, and elongation at break.

Main Results:

  • A smooth, non-sticky, rubber-like sheet was successfully produced.
  • Curing behavior and mechanical properties were influenced by polyricinoleate molecular weight and sulfur curative levels.
  • Optimal properties were achieved with polyricinoleate (MW 100,800), showing a hardness of 48 A, tensile strength of 6.91 MPa, and elongation at break of 350%.

Conclusions:

  • A novel bio-based thermosetting elastomer can be effectively prepared from methyl ricinoleate.
  • The developed elastomer demonstrates favorable mechanical properties, comparable to some conventional thermosetting materials.
  • This research highlights the potential of utilizing renewable resources for advanced elastomer development.