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Updated: Sep 19, 2025
10:22
Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
Published on: November 30, 2020
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End-Functionalized Biobased Aliphatic Polyesters Exhibiting Unique Emission/Thermal Properties.
Daisuke Shimoyama1, Shunsuke Sato1, Shunta Ohsawa2
1Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa Hachioji, Tokyo 192-0397, Japan.
ACS Polymers Au
|June 16, 2025
Summary
Researchers precisely functionalized biobased polyesters with vinyl chain ends using olefin metathesis. This modification uniquely altered the polymers
Area of Science:
- Polymer Chemistry
- Organic Synthesis
- Materials Science
Background:
- Biobased aliphatic polyesters with vinyl chain ends are synthesized via acyclic diene metathesis (ADMET) polymerization.
- Controlling polymer end-group functionality is crucial for tailoring material properties.
Purpose of the Study:
- To achieve exclusive end-group functionalization of vinyl-terminated biobased polyesters.
- To investigate the impact of these end groups on polymer properties, including thermal and emission characteristics.
Main Methods:
- Utilized olefin metathesis with a molybdenum-alkylidene catalyst for end-group introduction.
- Followed by reaction with various aldehydes to achieve quantitative functionalization.
- Confirmed functionalization by grafting polyethylene glycol (PEG) with certified molecular weights (Mn).
Main Results:
- Successfully introduced specific end groups into biobased aliphatic polyesters.
- Demonstrated quantitative end-group introduction confirmed by PEG grafting.
- Observed unique emission and thermal properties resulting from end-group interactions.
Conclusions:
- Exclusive end-group functionalization of vinyl-terminated polyesters is achievable.
- End-group modification significantly influences polymer thermal properties, affecting melting and crystallization temperatures.
- This method offers a pathway to design functional biobased polymers with tailored characteristics.
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