Recoverable Fluorination Accelerates Ring-Opening Copolymerisation and Enables Post-Polymerisation-Modification of...

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.