Laboratoire de Biotechnologie et de Chimie Marines, EA 3884, Université Bretagne Sud, Lorient Cedex, France.
CNRS, ICMPE, UMR 7182, Université Paris Est Créteil, Thiais, France.
Biofouling. 2021 Sep;37(8):894-910. doi: 10.1080/08927014.2021.1981298. Epub 2021 Sep 27.
The development of biofouling is a major problem for marine industries. The conception of antifouling and fouling release coatings, with controlled physical-chemical properties is a promising strategy. Among them, amphiphilic systems, such as those composed of a hydrophobic polydimethylsiloxane matrix and a hydrophilic polyethyleneglycol additive are the most efficient and up to date. Despite their effectiveness, these systems are questioned due to the petrochemical origin of PDMS. The aim of this project was to substitute the PDMS matrix with a biopolymer, poly(3-hydroxybuyrate-co-3-hydroxyvalerate) and to improve its anti-adhesion properties through the elaboration of an amphiphilic system, the addition of PEG or PHBHHx--PEG copolymer. The results, including the physico-chemical properties of PHBHV based coatings and static adhesion tests on a marine bacterium, 4J6 and a diatom, are compared with those of PDMS and PEG-modified PDMS coatings. Real antiadhesion activity was obtained for the PHBHV/PHBHHx--PEG system for a promising eco-friendly strategy.
生物污垢的发展是海洋工业的一个主要问题。具有受控物理化学性质的防污和自释放涂料的构想是一种很有前途的策略。其中，两亲性体系，如由疏水性聚二甲基硅氧烷基质和亲水性聚乙二醇添加剂组成的体系，是最有效和最新的。尽管这些系统非常有效，但由于 PDMS 的石化来源，它们受到了质疑。本项目的目的是用生物聚合物聚（3-羟基丁酸酯-co-3-羟基戊酸酯）替代 PDMS 基质，并通过制备两亲性体系、添加 PEG 或 PHBHHx-PEG 共聚物来提高其抗粘连性能。包括基于 PHBHV 的涂层的物理化学性质和对海洋细菌 4J6 和硅藻的静态粘附测试在内的结果与 PDMS 和 PEG 改性 PDMS 涂层的结果进行了比较。对于 PHBHV/PHBHHx-PEG 体系，获得了真正的抗粘连活性，这是一种很有前途的环保策略。
