A recent study has concluded that the addition of fluorine in certain polyesters can accelerate polymer chain formation making longer chains more accessible which enables targeted modification of the materials properties. As a result of the addition, polyesters can be more competitive with other plastics, while allowing for recovery of the fluorine after degradation.
Described in the journal Angewandte Chemie, a team of researchers from the University of Bayreuth have developed a novel class of fluorinated polyesters which degrade more easily that conventional polyesters thanks to the integration of fluorine.
A recent follow up study has resulted in further development of the material, which results in a novel material that is competitive with several other plastics.
"Fluorinated polyesters are particularly interesting because fluorine, as the most electronegative element, attracts electrons extremely strongly. This allows us to create materials with fluorine that would be hard to imagine with other elements," said Dr. Alex J. Plajer at the University of Bayreuth.
The researchers found that fluorine not only speeds up polymerization, it also resulted in longer polymer chains making the material more mechanically robust.
"What's especially exciting is that we can selectively replace certain fluorine atoms in the polyester with other molecules. This allows us to precisely control the properties of the polyesters," added Plajer.
"Our findings demonstrate how targeted molecular modifications can fundamentally alter the properties of plastics. Integrating fluorine into the polymer structure opens up new avenues for developing sustainable and high-performance materials that could meet both environmental requirements and industrial standards."