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Experimental Assessment of a Conducting Polymer (PEDOT) and Microbial Biofilms as Deterrents and Facilitators of Macro-Biofouling: Larval Settlement of the Barnacle Notobalanus flosculus (Darwin, 1854) from Central Chile
Journal of Marine Science and Engineering ( IF 2.9 ) Pub Date : 2021-01-14 , DOI: 10.3390/jmse9010082
Simone Baldanzi , Ignacio T. Vargas , Francisco Armijo , Miriam Fernández , Sergio A. Navarrete

Maritime enterprises have long sought solutions to reduce the negative consequences of the settlement and growth of marine biofouling (micro- and macro-organisms) on virtually all surfaces and materials deployed at sea. The development of biofouling control strategies requires solutions that are cost-effective and environmentally friendly. Polymer-based coatings, such as the poly (3,4-ethylenedioxythiophene) (PEDOT) and its potential applications, have blossomed over the last decade thanks to their low cost, nontoxicity, and high versatility. Here, using multiple-choice larval settlement experiments, we assessed the efficacy of PEDOT against the balanoid barnacle Notobalanus flosculus one of the most common biofouling species in Southeastern Pacific shores, and compared results against a commercially available antifouling (AF) coating, and biofilms at different stages of succession (1, 2, 4 and 8 weeks). We show that larval settlement on PEDOT-coated surfaces was similar to the settlement on AF-coated surfaces, while larvae settled abundantly on roughened acrylic and on early-to-intermediate stages of biofilm (one to four weeks old). These results are promising and suggest that PEDOT is a good candidate for fouling-resistant coating for specific applications at sea. Further studies to improve our understanding of the mechanisms of barnacle larval deterrence, as well as exposure to field conditions, are encouraged.

中文翻译:

实验性评估导电聚合物(PEDOT)和微生物生物膜作为宏观生物结垢的威慑剂和促进剂:来自智利中部的藤壶Notobalanus flosculus的幼虫沉降(达尔文,1854年)

海上企业长期以来一直在寻求解决方案,以减少海洋生物污垢(微生物和宏观生物)在几乎所有海上表面和材料上的沉降和增长所带来的负面影响。生物污垢控制策略的发展需要经济高效且环境友好的解决方案。在过去的十年中,基于聚合物的涂料(如聚(3,4-乙撑二氧噻吩)(PEDOT))及其潜在应用得到了蓬勃发展,这是由于它们的低成本,无毒和多功能性。在这里,使用多项选择的幼虫沉降实验,我们评估了PEDOT对抗龟头藤壶Notobalanus flosculus的功效东南太平洋沿岸最常见的生物污染物种之一,并将结果与​​可商购的防污(AF)涂层以及在不同演替阶段(1、2、4和8周)的生物膜进行了比较。我们显示,在PEDOT涂层表面上的幼虫沉降与在AF涂层表面上的沉降相似,而幼虫在粗糙的丙烯酸膜和生物膜的早期到中间阶段(一到四周大)上大量沉降。这些结果是有希望的,并表明PEDOT是海上特定应用的防污涂料的良好候选者。鼓励开展进一步研究以增进我们对藤壶幼虫威慑机制以及暴露于田间条件的理解。
更新日期:2021-01-14
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