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Flame sprayed environmentally friendly high density polyethylene (HDPE)-capsaicin composite coatings for marine antifouling applications
Materials Letters ( IF 3 ) Pub Date : 2019-03-01 , DOI: 10.1016/j.matlet.2018.11.144
Yi Liu , Xiaoqi Shao , Jing Huang , Hua Li

Abstract Marine biofouling has emerged as worldwide serious problems for artificial marine infrastructures. Among the measures taken so far to solve the abovementioned problems, construction of an antifouling layer has been proven to be effective in offering long-term antifouling performances. Antifouling based on the use of biocides is the most important method in modern maritime industries. While tributyltin (TBT)-based self-polishing coatings are being replaced by other biocide-releasing coatings, the environmental toxicity of these compounds is also under scrutiny. Therefore, there is a significant interest in developing non-toxic technologies. Green biocides can also be extracted from many types of organisms including terrestrial plants, sea creatures and bacteria. The capsaicin was extracted from chili pepper. In this study, flame sprayed high density polyethylene (HDPE)–capsaicin composite coatings were developed for marine antifouling applications. Capsaicin powder were fixed by polymer-based substrate and distributed evenly. Antifouling performances of the films were assessed by examining survival and colonization behaviors of E. coli and Bacillus sp. bacteria and Phaeodactylum tricornutum. Antifouling test indicated excellent antibacterial properties of HDPE–capsaicin composite coatings against both gram-negative Escherichia coli and gram-positive marine Bacillus sp. bacteria. Excellent antifouling performances against bacteria and algae of the thermal sprayed composite coatings give clear insight into their potential applications as environmentally friendly antifouling layers in the marine environment.

中文翻译:

用于船舶防污应用的火焰喷涂环保高密度聚乙烯 (HDPE)-辣椒素复合涂料

摘要 海洋生物污染已成为全球人工海洋基础设施面临的严重问题。在迄今为止为解决上述问题而采取的措施中,已证明构建防污层在提供长期防污性能方面是有效的。基于使用杀菌剂的防污是现代海事工业中最重要的方法。虽然基于三丁基锡 (TBT) 的自抛光涂料正被其他释放杀菌剂的涂料所取代,但这些化合物的环境毒性也受到审查。因此,人们对开发无毒技术有着浓厚的兴趣。绿色杀菌剂也可以从多种生物体中提取,包括陆生植物、海洋生物和细菌。辣椒素是从辣椒中提取的。在这项研究中,火焰喷涂高密度聚乙烯 (HDPE)-辣椒素复合涂层是为海洋防污应用开发的。辣椒素粉由聚合物基基质固定并均匀分布。通过检查大肠杆菌和芽孢杆菌的存活和定殖行为来评估薄膜的防污性能。细菌和三角褐指藻。防污试验表明 HDPE-辣椒素复合涂层对革兰氏阴性大肠杆菌和革兰氏阳性海洋芽孢杆菌具有优异的抗菌性能。细菌。热喷涂复合涂层对细菌和藻类的优异防污性能使人们清楚地了解其作为海洋环境中环保防污层的潜在应用。
更新日期:2019-03-01
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