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Sustainable Polyurethane Networks Based on Rosin with Reprocessing Performance.

Jiawei Li1, Weiming Yang1, Zhao Ning1

  • 1Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Ministry of Education, College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China.

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|October 23, 2021
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Summary

This study introduces novel rosin-based polyurethane vitrimers, utilizing a natural product derivative for enhanced material properties. These advanced vitrimers exhibit superior mechanical strength, self-healing, and reprocessing capabilities.

Keywords:
polyurethane vitrimerreprocessingrosinself-healing

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Area of Science:

  • Polymer Science
  • Materials Chemistry
  • Sustainable Materials

Background:

  • Rosin is a readily available natural product.
  • Polyurethane vitrimers offer unique dynamic network properties.
  • Developing sustainable and high-performance polymers is a key research area.

Purpose of the Study:

  • To synthesize and characterize novel rosin-based polyurethane vitrimers.
  • To evaluate the mechanical properties, self-healing, and reprocessing abilities of these materials.
  • To explore the potential of natural products in advanced polymer applications.

Main Methods:

  • Synthesis of rosin-derived monomers with alcohol groups.
  • Network formation using isocyanates (HDI) as a curing agent.
  • Characterization via Fourier-transform infrared spectroscopy (FTIR) and dynamic mechanical analysis (DMA).

Main Results:

  • Successfully prepared rosin-based polyurethane vitrimers with superior mechanical properties.
  • Demonstrated self-healing and reprocessing capabilities due to dynamic urethane linkages.
  • Optimized healing time and temperature for self-healing performance.
  • Achieved restoration and even enhancement of mechanical properties after multiple reprocessing cycles.

Conclusions:

  • Rosin derivatives are effective monomers for creating high-performance polyurethane vitrimers.
  • The dynamic nature of the vitrimer network enables significant self-healing and reprocessing.
  • This work highlights a sustainable pathway for developing advanced functional polymers.