Department of Polymer and Surface Engineering, Institute of Chemical Technology, Mumbai, 400019, India.
Rapid Prototype Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Pune, 411025, India.
Environ Sci Pollut Res Int. 2021 Sep;28(34):46356-46366. doi: 10.1007/s11356-020-09799-6. Epub 2020 Jul 2.
Nature always astonishes us with its marvelous creations which act as a model for acquiring a solution to complex human problems, this practice of designing and manufacturing the product replicating processes that occur in nature is referred to as biomimicking. Molluscan shell is nature's one such offering that delivers remarkable mechanical properties by virtue of its hierarchical multi-layered structure. In this work, a peculiar avenue for facile biomimicking multitudinous molluscan shell architectures such as complex cross lamellar, cross lamellar, foliated, prismatic, columnar nacre, and sheet nacre structure are manufactured by 3D prototyping of biodegradable, biocompatible polylactic acid (PLA). Here, the reliance of mechanical attributes of PLA on various architectures is studied and demonstrated that the nacre, owing to its complex structure, leads to high energy dissipation (12.5094 J/m) imparting high toughness.
大自然总是以其奇妙的创造令我们惊叹不已，这些创造为我们提供了解决复杂人类问题的模型。这种设计和制造产品的方法，复制自然界中发生的过程，被称为仿生学。软体动物的壳是大自然的一种馈赠，它具有分层的多层结构，赋予了其卓越的机械性能。在这项工作中，通过可生物降解、生物相容的聚乳酸 (PLA) 的 3D 原型制作，开辟了一条独特的仿生学途径，可以制造出多种软体动物壳结构，如复杂的交错层状、交错层状、片状、棱柱层状、柱状珍珠层和片状珍珠层结构。在这里，研究了 PLA 的机械性能对各种结构的依赖关系，并证明珍珠层由于其复杂的结构，导致高能量耗散（12.5094 J/m），赋予了其高韧性。
