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Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)01:16

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Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
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The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
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Recoverable Fluorination Accelerates Ring-Opening Copolymerisation and Enables Post-Polymerisation-Modification of

Christoph Fornacon-Wood1, Luca Steiner2, Chengzhang Xu1

  • 1Makromolekulare Chemie, Universität Bayreuth, Universitätsstraße 30, Bayreuth, 95447, Germany.

Angewandte Chemie (International Ed. in English)
|October 21, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed novel fluorinated polyesters using ring-opening copolymerization. These advanced materials offer enhanced properties, tunable functionality via post-polymerization modification, and sustainable fluorine recovery upon degradation.

Keywords:
Fluorinated polymerspolyestersring‐opening copolymerisation

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Area of Science:

  • Polymer Chemistry
  • Materials Science
  • Organic Fluorine Chemistry

Background:

  • Fluorination enhances polymer properties but is underexplored in degradable polymers.
  • Developing degradable polymers with superior performance and functionality is crucial.

Purpose of the Study:

  • To synthesize and characterize a new class of fluorinated degradable polyesters.
  • To investigate the impact of fluorination on catalysis, material properties, and end-of-life options.

Main Methods:

  • Ring-opening copolymerization of pentafluoro styrene oxide with phthalic anhydride.
  • Characterization of molecular weights, thermal, and mechanical properties.
  • Post-polymerization modification (PPM) studies on bulk materials, surfaces, films, and fibers.
  • Degradation studies for fluorine recovery.

Main Results:

  • Synthesized fluorinated polyesters with high molecular weights (>100 kg mol⁻¹).
  • Pendant C₆F₅ groups accelerated catalysis and improved material properties.
  • Achieved tunable material properties through efficient PPM, including surface modifications.
  • Demonstrated quantitative fluorine recovery as sodium fluoride upon degradation.

Conclusions:

  • Targeted fluorination of degradable polyesters enhances catalysis and material properties.
  • The developed polymers offer tunable functionality and a sustainable end-of-life pathway.
  • This work opens new avenues for advanced functional and degradable fluorinated materials.