Investigating the anti-bioadhesion properties of short, medium chain length, and amphiphilic polyhydroxyalkanoate films.

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS ACS Applied Bio Materials Pub Date : 2024-02-01 Epub Date: 2024-03-11 DOI:10.1080/08927014.2024.2326038

Alexandra Guennec, Eric Balnois, Antoine Augias, Mama Aïssata Bangoura, Cédric Jaffry, Christelle Simon-Colin, Valérie Langlois, Fabrice Azemar, Guillaume Vignaud, Isabelle Linossier, Fabienne Faÿ, Karine Vallée-Réhel

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Abstract

Silicone materials are widely used in fouling release coatings, but developing eco-friendly protection via biosourced coatings, such as polyhydroxyalcanoates (PHA) presents a major challenge. Anti-bioadhesion properties of medium chain length PHA and short chain length PHA films are studied and compared with a reference Polydimethylsiloxane coating. The results highlight the best capability of the soft and low-roughness PHA-mcl films to resist bacteria or diatoms adsorption as compared to neat PDMS and PHBHV coatings. These parameters are insufficient to explain all the results and other properties related to PHA crystallinity are discussed. Moreover, the addition of a low amount of PEG copolymers within the coatings, to create amphiphilic coatings, boosts their anti-adhesive properties. This work reveals the importance of the physical or chemical ambiguity of surfaces in their anti-adhesive effectiveness and highlights the potential of PHA-mcl film to resist the primary adhesion of microorganisms.

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研究短链、中链和两亲性聚羟基烷酸酯薄膜的抗生物黏附特性。

有机硅材料被广泛用于污垢释放涂层，但通过生物源涂层（如聚羟基丙酸酯（PHA））开发生态友好型保护层则是一项重大挑战。研究了中链长度 PHA 和短链长度 PHA 薄膜的抗生物粘附性能，并将其与参考的聚二甲基硅氧烷涂层进行了比较。结果表明，与纯 PDMS 和 PHBHV 涂层相比，柔软、低粗糙度的 PHA-mcl 薄膜具有最佳的抗细菌或硅藻吸附能力。这些参数不足以解释所有结果，因此我们讨论了与 PHA 结晶度相关的其他特性。此外，在涂层中加入少量的 PEG 共聚物以形成两亲涂层，还能增强其抗粘附性能。这项研究揭示了表面的物理或化学模糊性对其抗粘附效果的重要性，并突出了 PHA-mcl 薄膜抵抗微生物初次粘附的潜力。

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