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Classification and Mechanical Properties of Synthetic Polymers01:28

Classification and Mechanical Properties of Synthetic Polymers

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The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
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Published on: August 25, 2016

A Fully Bio-Based Elastomer with Ultrahigh Lignin Content and Performance Rivaling Nitrile Rubber.

Shi Liu1, Conghui Mi1, Zhihan Tong1

  • 1State Key Laboratory of Woody Oil Resources Utilization, Northeast Forestry University, Harbin, China.

Advanced Materials (Deerfield Beach, Fla.)
|June 8, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a high-performance, recyclable elastomer from lignin, a renewable industrial byproduct. This eco-material offers superior properties to petroleum-based alternatives and enables closed-loop recycling.

Keywords:
elastomerin situ graft copolymerizationligninnitrile rubbersustainability

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Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
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Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer

Published on: November 30, 2020

Area of Science:

  • Materials Science
  • Green Chemistry
  • Polymer Science

Background:

  • Renewable, high-performance elastomers are crucial for sustainable materials.
  • Industrial Kraft lignin is an abundant, underutilized lignocellulosic byproduct.
  • Developing eco-friendly alternatives to petroleum-based elastomers is a key scientific goal.

Purpose of the Study:

  • To create a high-performance, recyclable elastomer directly from industrial Kraft lignin.
  • To investigate a one-pot in situ graft copolymerization strategy for lignin valorization.
  • To evaluate the properties and recyclability of the resulting lignin-based elastomer.

Main Methods:

  • Utilized a deep eutectic solvent (oxalic acid and 1,6-hexanediol) for lignin dissolution and graft copolymerization.
  • Employed a catalyst-free esterification process at 110°C to form an interpenetrating rigid-flexible network.
  • Incorporated 50-75 wt.% lignin into the elastomer structure.

Main Results:

  • The optimal elastomer achieved a tensile strength of 12.0 MPa, 878% elongation, and 85.1 MJ m⁻³ fracture energy.
  • Properties rivaled or exceeded those of petroleum-derived nitrile butadiene rubber.
  • Demonstrated excellent oil and abrasion resistance, electrical insulation, photothermal conversion, and infrared-induced self-healing.
  • The material exhibited efficient closed-loop recyclability through reprocessing.

Conclusions:

  • A scalable route to high-performance, recyclable elastomers from abundant lignin byproduct was established.
  • This lignin-based elastomer presents a sustainable alternative to conventional synthetic rubbers.
  • The developed material holds significant potential for broad applications in eco-friendly materials.