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Bioinspired Engineering towards Tailoring Advanced Lignin/Rubber Elastomers.

Haixu Wang1, Weifeng Liu2, Jinhao Huang3

  • 1School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China. haixuwang123@163.com.

Polymers
|April 10, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces high-performance lignin/carbon black (CB)/nitrile rubber (NBR) elastomers using a dual-crosslinking network. This approach enhances mechanical properties and stability, offering a new solution for high lignin content applications.

Keywords:
coordination sacrificial bondsdual-crosslinking networkenergy dissipationligninnitrile rubber elastomers

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Sustainable Materials

Background:

  • Lignin valorization for high-volume, high-value applications remains a significant challenge.
  • Developing advanced elastomers with improved mechanical and thermal properties is crucial for industrial applications.

Purpose of the Study:

  • To develop high-performance lignin/carbon black (CB)/nitrile rubber (NBR) elastomers.
  • To create a dual-crosslinking network utilizing sulfur covalent bonds and dynamic coordination sacrificial bonds.
  • To explore lignin's role as a CB substituent and natural ligand for metal coordination.

Main Methods:

  • Incorporation of lignin into NBR elastomers, partially substituting CB.
  • Construction of a dual-crosslinking network with sulfur covalent bonds and Zn-based coordination bonds.
  • Tuning mechanical properties by adjusting the ratio of coordination to covalent bonds.

Main Results:

  • Achieved high-performance lignin/CB/NBR elastomers with enhanced strength and modulus compared to traditional CB-filled elastomers.
  • Maintained excellent elasticity while improving thermal stability and high-temperature oil resistance.
  • Demonstrated lignin's synergistic effect as a ligand for metal coordination, enhancing crosslinking.

Conclusions:

  • The developed dual-crosslinking strategy effectively enhances the performance of NBR elastomers.
  • Lignin can be utilized as a functional component in high-performance rubber composites at high loading content.
  • This work provides a novel approach for designing sustainable and high-performance lignin-based elastomers.