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结结强度对可生物降解网机械性能的影响

Louis Le Gué^1,2, Esther Savina³, Mael Arhant⁴

¹Ifremer, RDT Research and Technological Development, 29280, Plouzané, France. louis.le.gue@ifremer.fr.

Scientific reports

|July 4, 2024

概括

可生物降解的渔网显示出减少幽灵捕鱼的希望. 然而,与传统的聚胺6 (PA6) 网相比,聚乙烯酸盐-co-adipate-co-terephthalate (PBSAT) 网在结点上明显较弱.

科学领域:

海洋生物学海洋生物学
材料科学材料科学材料科学
渔业科学渔业科学

背景情况:

由于丢失或丢弃的渔具造成的幽灵捕鱼是一个重大的全球环境问题.
开发可生物降解的渔具对于减轻海洋污染和生态系统损害至关重要.
替代材料必须与传统轮的机械性能相匹配,以便广泛采用.

研究的目的:

为了比较一种新型生物降解渔网材料的机械性能,聚乙烯酸-co-adipate-co-terephthalate (PBSAT),与传统的聚胺6 (PA6) 网.
为了评估PBSAT在单丝,结和网尺度上的性能.
为了确定PBSAT作为状网中PA6的替代品的适用性.

主要方法:

机械测试PBSAT和PA6材料在单丝,结和网尺度.
对结的几何和机械行为的分析,特别是织人结的分析.
材料强度和故障点的比较评估.

主要成果:

PBSAT单丝纤维的强度大约是PA6单丝纤维的一半.
与PA6相比,PBSAT中结节和净尺度的强度损失更为明显,这表明材料对结节的敏感性.
结和网尺度的结果一致,这表明网面板测试可能是多余的.

结论:

织人结的机械行为是评估可生物降解渔具材料的关键因素.
虽然PBSAT是生物降解的,但需要进一步的材料或设计修改,以满足渔具的机械需求.
专注于结的完整性对于开发有效的生物降解网来打击幽灵捕鱼至关重要.

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