Degradable Anti-Biofouling Polyester Coatings with Controllable Lifetimes

Area of Science:

• Polymer Chemistry
• Materials Science
• Biomaterials Engineering

Background:

• Developing degradable coatings with improved mechanical properties and anti-biofouling capabilities is crucial for extending material lifetimes.
• Existing coatings often face limitations in durability and controlled degradation.

Purpose of the Study:

• To synthesize and characterize novel degradable co-polyesters for advanced coatings.
• To investigate the influence of pH and network structure on degradation kinetics.
• To evaluate the anti-biofouling properties of the synthesized coatings.

Main Methods:

• Radical ring-opening polymerization was employed to synthesize co-polyesters from cyclic ketene acetals, di-(ethylene glycol) methyl ether methacrylate, and 4-benzoylphenyl methacrylate.
• Films were prepared via spin-coating and drop-casting, followed by UV cross-linking.
• Degradation studies were conducted in aqueous buffers at various pH levels.

Main Results:

• The synthesized co-polyesters formed cross-linked networks upon UV irradiation.
• Degradation rates were found to be dependent on both buffer pH and the gel fraction of the polymer network.
• The coatings exhibited significant resistance to bovine serum albumin, indicating anti-biofouling potential.
• Tunable degradation rates and hydration degrees (swelling ratio) were achieved by altering monomer compositions.

Conclusions:

• The developed co-polyester system offers a versatile platform for creating degradable, anti-biofouling coatings with tunable properties.
• Control over degradation kinetics and hydration can be achieved through careful selection of monomer ratios and environmental pH.
• These findings present a promising approach for designing next-generation biomaterials and surface coatings.