Laboratoire de Biotechnologie et de Chimie Marines (LBCM), EMR CNRS 6076, Université Bretagne Sud, Lorient, France.
Laboratoire de Biotechnologie et de Chimie Marines (LBCM), EMR CNRS 6076, Université de Brest, Quimper, France.
Biofouling. 2024 Feb;40(2):177-192. doi: 10.1080/08927014.2024.2326038. Epub 2024 Mar 11.
Silicone materials are widely used in fouling release coatings, but developing eco-friendly protection 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.
硅材料在防污涂层中得到了广泛的应用，但开发环保型保护生物源涂层，如聚羟基脂肪酸酯（PHA），是一个重大的挑战。本文研究并比较了中链长度 PHA 和短链长度 PHA 薄膜的抗生物附着性能，以及参考聚二甲基硅氧烷涂层。结果表明，与纯 PDMS 和 PHBHV 涂层相比，柔软且低粗糙度的 PHA-mcl 薄膜具有抵抗细菌或硅藻吸附的最佳能力。这些参数不足以解释所有结果，并讨论了与 PHA 结晶度相关的其他特性。此外，在涂层中添加少量的 PEG 共聚物，以形成两亲性涂层，可提高其抗粘性。这项工作揭示了表面物理或化学模糊性在其抗粘性效果中的重要性，并突出了 PHA-mcl 薄膜抵抗微生物初始附着的潜力。
