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Sequence-Structure-Property Relationships in Short-Chain Polyesters: How Primary Structure Governs Macroscopic
Vera Bocharova1, Isaiah T Dishner1, Jared I Bowman1
1Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States.
Macromolecules
|May 18, 2026
Summary
Controlling monomer sequence in polymers is crucial for material properties. Irregular sequences decrease thermal stability, crystallinity, and order, highlighting the need for sequence control in advanced polymer design.
Area of Science:
- Polymer Chemistry
- Materials Science
- Nanotechnology
Background:
- Polymer properties are intrinsically linked to their nanoscale structure.
- Monomer sequence influence is less understood than tacticity.
- Understanding sequence effects is vital for designing advanced polymers.
Purpose of the Study:
- To investigate the impact of monomer sequence distribution on polymer thermal behavior and morphology.
- To compare polymers with varying sequence regularity derived from identical monomers.
- To elucidate the relationship between sequence defects and material properties.
Main Methods:
- Synthesis of homo- and copolyesters with controlled sequence regularity.
- Analysis of thermal properties (stability, melting temperature).
- Characterization of polymer morphology and crystallinity.
Main Results:
- Increasing sequence defects progressively reduce thermal stability.
- Crystallinity and melting temperatures decrease with higher sequence irregularity.
- Morphological order is diminished by sequence defects.
Conclusions:
- Sequence control is a critical factor in polymer design.
- Sequence defects negatively impact key material properties.
- This research is essential for developing advanced polymers for new applications.
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