Curto Marco, Le Gall Maelenn, Catarino Ana Isabel, Niu Zhiyue, Davies Peter, Everaert Gert, Dhakal Hom N
School of Mechanical and Design Engineering, University of Portsmouth PO1 3DJ Portsmouth UK
Marine Structures Laboratory, IFREMER Centre Bretagne, Technopole Iroise 29280 Plouzane France.
RSC Adv. 2021 Oct 7;11(52):32917-32941. doi: 10.1039/d1ra03023j. eCollection 2021 Oct 4.
There is a growing interest in replacing fossil-based polymers and composites with more sustainable and renewable fully biobased composite materials in automotive, aerospace and marine applications. There is an effort to develop components with a reduced carbon footprint and environmental impact, and materials based on biocomposites could provide such solutions. Structural components can be subjected to different marine conditions, therefore assessment of their long-term durability according to their marine applications is necessary, highlighting related degradation mechanisms. Through an up-to-date review, this work critically discusses relevant literature on the long-term durability of biocomposites specific for marine environments. Importantly, in this review we report the effects of abiotic parameters, such as the influence of hygrothermal exposures (temperatures and UV radiation) on physical, mechanical and thermal characteristics of biocomposites. Furthermore, we identify and discuss the potential ecotoxicological effects of leaching substances and microplastics derived from biocomposites, as well as the change in mechanical, physical and thermal behaviours correlated to degradation in the fibre matrix interface, surface defects and overall deterioration of the composite's properties. Finally, the combined effects of various environmental exposures on the long-term durability of the biocomposites are critically reviewed.
在汽车、航空航天和船舶应用中，用更可持续和可再生的全生物基复合材料取代化石基聚合物和复合材料的兴趣日益浓厚。人们正在努力开发碳足迹和环境影响更小的部件，而基于生物复合材料的材料可以提供这样的解决方案。结构部件可能会受到不同的海洋环境影响，因此根据其海洋应用评估其长期耐久性是必要的，这突出了相关的降解机制。通过最新的综述，这项工作批判性地讨论了关于特定于海洋环境的生物复合材料长期耐久性的相关文献。重要的是，在本综述中，我们报告了非生物参数的影响，例如湿热暴露（温度和紫外线辐射）对生物复合材料物理、机械和热特性的影响。此外，我们识别并讨论了生物复合材料中浸出物质和微塑料的潜在生态毒理学效应，以及与纤维基体界面降解、表面缺陷和复合材料性能整体劣化相关的机械、物理和热行为变化。最后，对各种环境暴露对生物复合材料长期耐久性的综合影响进行了批判性综述。
