Abstract Societal and environmental constraints have led to changes in international and European regulations to limit the use of biocides in antifouling paints. In this context, coatings combining fouling release properties and leaching of active molecules are sought. The objectives of this study are to conceive a hybrid system for antifouling paint and to observe the influence of the physio-chemical properties of the binders on its antifouling activity. Poly(lactic acid) (PLA) and poly(dimethylsiloxane) (PDMS) homopolymers have already been used as binders for different antifouling strategies. The use of a block copolymer based on PLA and PDMS is likely to allow the design of paint with biocides release associated to fouling release properties in order to be more efficient with a lower environmental impact. Triblock copolymers with different molar compositions have been synthesized. The properties of the corresponding films have been determined in distilled water (adhesion to the support, hydrophobicity). Then formulated paints have been immersed in Lorient harbor to evaluate their erosion, degradation and antifouling efficacy. Furthermore, their biocide release kinetics were studied in artificial seawater to evaluate their environmental impact. The silicon-poly(lactic acid) paints have shown an efficiency superior to a commercial paint during their in situ immersion (19 months) with a lower biocides amount (14 %).

中文翻译：

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环保型硅-聚乳酸杂化防污涂料

摘要 社会和环境限制导致国际和欧洲法规发生变化，以限制在防污涂料中使用杀菌剂。在这种情况下，寻求结合污垢释放特性和活性分子浸出的涂层。本研究的目的是构思一种用于防污漆的混合体系，并观察粘合剂的理化性质对其防污活性的影响。聚乳酸 (PLA) 和聚二甲基硅氧烷 (PDMS) 均聚物已被用作不同防污策略的粘合剂。使用基于 PLA 和 PDMS 的嵌段共聚物可能允许设计具有与污垢释放特性相关的杀生物剂释放的涂料，以便在降低环境影响的情况下更有效。已经合成了具有不同摩尔组成的三嵌段共聚物。相应薄膜的特性已在蒸馏水中测定（对载体的附着力、疏水性）。然后将配制好的油漆浸入洛里昂港以评估其侵蚀、降解和防污功效。此外，在人工海水中研究了它们的杀菌剂释放动力学，以评估它们对环境的影响。硅聚乳酸涂料在原位浸渍（19 个月）期间表现出优于商业涂料的效率，且杀菌剂用量较低（14%）。然后将配制好的油漆浸入洛里昂港以评估其侵蚀、降解和防污功效。此外，在人工海水中研究了它们的杀菌剂释放动力学，以评估它们对环境的影响。硅聚乳酸涂料在原位浸渍（19 个月）期间表现出优于商业涂料的效率，且杀菌剂用量较低（14%）。然后将配制好的油漆浸入洛里昂港以评估其侵蚀、降解和防污功效。此外，在人工海水中研究了它们的杀菌剂释放动力学，以评估它们对环境的影响。硅聚乳酸涂料在原位浸渍（19 个月）期间表现出优于商业涂料的效率，且杀菌剂用量较低（14%）。