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Updated: Jun 11, 2025
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Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
Published on: December 16, 2022
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Biorenewable and circular polyolefin thermoplastic elastomers
Ye Sha1, Xiaofan Chen2, Wei Sun2,3
1Department of Chemistry and Material Science, College of Science, Nanjing Forestry University, Nanjing, 210037, China. shaye@njfu.edu.cn.
Nature Communications
|October 1, 2024
Summary
This study presents a novel, chemically recyclable thermoplastic elastomer platform derived from biomass. The innovative design enables efficient depolymerization and addresses sustainability challenges in polymer materials.
Area of Science:
- Polymer Chemistry
- Materials Science
- Sustainable Chemistry
Background:
- Addressing polymer sustainability is crucial, with chemical recycling of thermoplastic elastomers (TPEs) being a significant challenge due to their complex multicomponent nature.
- Current advancements in plastics circularity have not fully addressed the recyclability of TPEs.
- Developing sustainable alternatives for high-performance polymers is essential.
Purpose of the Study:
- To create a homopolymer-based platform for chemically recyclable and tough thermoplastic elastomers.
- To design a semicrystalline polymer with controlled molecular weight and crystallinity for enhanced recyclability.
- To utilize a fully biobased cyclic olefin for monomer synthesis, promoting feedstock renewability.
Main Methods:
- Ring-opening metathesis polymerization (ROMP) of a biobased cyclic olefin to synthesize a semicrystalline polymer.
- Controlled manipulation of ring-chain equilibrium to achieve high conversion in both polymerization and depolymerization.
- Characterization of the resulting thermoplastic elastomer for performance and recyclability.
Main Results:
- A high molecular weight, low crystallinity semicrystalline polymer was successfully synthesized.
- Quantitative conversions were achieved for both forward polymerization and reverse depolymerization, demonstrating efficient chemical recycling.
- The developed platform yields a tough, high-performance thermoplastic elastomer from a renewable resource.
Conclusions:
- A simple, circular, high-performance thermoplastic elastomer platform based on biomass has been established.
- Monomer design is critical for achieving feedstock renewability, depolymerization selectivity, and overcoming performance trade-offs in sustainable polymers.
- This work offers a promising solution for the sustainable production and recycling of thermoplastic elastomers.
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