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Wednesday, 30 September 2020
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Raw materials & technologies, Technologies

Copolymers with hydrolysis-generating zwitterions for antifouling coatings

Tuesday, 14 July 2020

A new study describes special surface-fragmenting hyperbranched copolymers for antifouling coatings.

The novel coating can inhibit the adhesion of protein and marine bacteria. Image source: skyliner222222 - Pixabay (symbol image).

The novel coating can inhibit the adhesion of protein and marine bacteria. Image source: skyliner222222 - Pixabay (symbol image).

Zwitterionic polymers have attracted increasing attention due to their excellent fouling resistance ability and eco-friendliness. Yet, their non-degradability and hydrophilic nature limit their applications.

Coating can inhibit the adhesion of protein and marine bacteria

In a new study, scientists have prepared a novel surface-fragmenting hyperbranched copolymer with tertiary carboxybetaine ester (TCB) primary chains and poly(ε-caprolactone) (PCL) bridged chains, where the former and the latter can hydrolyse and degrade in marine environments, continuously generating zwitterions, so the polymer coating has a fouling resistant and renewable surface. The study demonstrates that the degradation rate of the polymer is well controlled by the content of PCL bridges. Protein resistance and antibacterial assays show that the coating can inhibit the adhesion of protein and marine bacteria (Pseudomonas sp.).

This new surface-fragmenting, self-regenerating hyperbranched zwitterionic copolymer has multiple applications in antifouling coatings.

The study can be found in Journal of Materials Chemistry B, Issue 25, 2020.

Image source: Pixabay.

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