Related Experiment Video
Updated: Mar 3, 2026
10:18
Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
Published on: January 7, 2019
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Structure-Property Relationships of Lignin-Derived Semiaromatic Poly(ether ester)s
Ryan K Maynard1,2, Kush G Patel3,2, Huiming Wu1,2
1Department of Chemistry, Franklin College of Arts and Sciences, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States.
Macromolecules
|March 2, 2026
Summary
Researchers developed novel bioderived semiaromatic polyesters from lignin, offering a sustainable alternative to petroleum-based polymers. These materials show excellent thermal stability and recyclability.
Area of Science:
- Polymer Chemistry
- Materials Science
- Sustainable Chemistry
Background:
- Petroleum-derived semiaromatic polyesters are widely used but face sustainability challenges.
- Replacing petroleum-based aromatics with cost-competitive bioderived monomers is a significant hurdle in polymer science.
Purpose of the Study:
- To synthesize and characterize novel semiaromatic polyesters from bioderived monomers.
- To evaluate the thermal, mechanical, and rheological properties of these new polymers.
- To demonstrate the chemical recyclability of the synthesized polyesters.
Main Methods:
- Synthesis of nine different polyesters from lignin-derived AB monomers (phloretic, coumaric, ferulic acids and derivatives) at >50 g scale.
- Comprehensive characterization including thermal analysis, tensile testing, and melt rheology.
- Construction of time-temperature superposition (TTS) master curves for seven polyesters.
Main Results:
- Polymers exhibit excellent thermal stability with glass transition temperatures (Tg) ranging from 16-65 °C.
- Tensile moduli varied from 4.6 to 1200 MPa, and elongation at break ranged from 7.5% to over 3800%.
- Analysis revealed insights into packing length and characteristic ratio, with successful chemical recycling to monomer in high yield.
Conclusions:
- Bioderived semiaromatic polyesters synthesized from lignin offer a promising sustainable alternative.
- The synthesized polymers possess a wide range of tunable thermal and mechanical properties.
- These polyesters are readily chemically recyclable, contributing to a circular economy.
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