Le Gué Louis, Davies Peter, Arhant Mael, Vincent Benoit, Tanguy Erwan
Ifremer RDT, Research and Technology Development Unit, 1625 route de Sainte-Anne, Plouzané, 29280, France; DECOD (Ecosystem Dynamics and Sustainability), IFREMER, INRAE, Institut Agro, Lorient, 56325, France.
Ifremer RDT, Research and Technology Development Unit, 1625 route de Sainte-Anne, Plouzané, 29280, France.
Mar Pollut Bull. 2023 Aug;193:115216. doi: 10.1016/j.marpolbul.2023.115216. Epub 2023 Jul 10.
This paper evaluates the use of a PBS/PBAT biodegradable rope to reduce the environmental impact of fishing gear lost at sea. The study aims to better understand the degradation mechanisms that the rope and its monofilaments may encounter due to the long term exposure to seawater. The monofilaments were immersed in natural seawater for up to 18 months, and rope samples were also immersed to study aging at a larger scale and evaluate the ability of a modelling tool to predict initial and aged states of the rope. At low temperatures, no loss of properties was observed for the monofilament and rope. However, at higher temperatures, biodegradation and hydrolysis processes were observed, leading to a faster loss of properties in the monofilament compared to the rope. The modelling tool provided conservative predictions due to severe mechanical test conditions of aged monofilament and a degradation gradient within the rope structure.
本文评估了使用聚丁二酸丁二醇酯/聚己二酸对苯二甲酸丁二醇酯（PBS/PBAT）可生物降解绳索来减少海上丢失渔具对环境的影响。该研究旨在更好地了解绳索及其单丝由于长期暴露于海水中可能遇到的降解机制。将单丝浸入天然海水中长达18个月，还将绳索样品浸入其中，以在更大规模上研究老化情况，并评估一种建模工具预测绳索初始状态和老化状态的能力。在低温下，未观察到单丝和绳索的性能损失。然而，在较高温度下，观察到了生物降解和水解过程，导致单丝的性能损失比绳索更快。由于老化单丝的严格机械测试条件以及绳索结构内的降解梯度，该建模工具提供了保守的预测。
