Construction of sustainable high-performance structural materials is a core part of the key global sustainability goal. Many efforts have been made in this field; however, challenges remain in terms of lowering costs by using all-green basic building blocks and improving mechanical properties to meet the demand of practical applications. Here, we report a robust and efficient bottom-up strategy with micro/nanoscale structure design to regenerate an isotropic wood from natural wood particles as a high-performance sustainable structural material. Regenerated isotropic wood (RGI-wood) exceeds the limitations of the anisotropic and inconsistent mechanical properties of natural wood, having isotropic flexural strength of ∼170 MPa and flexural modulus of ∼10 GPa. RGI-wood also shows superior water resistance and fire retardancy properties to natural pine wood. Mass production of large sized RGI-wood and functional RGI-wood nanocomposites can also be achieved.

中文翻译：

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再生各向同性木材


可持续高性能结构材料的构建是全球可持续发展关键目标的核心部分。在这个领域已经做出了很多努力；然而，通过使用全绿色基础构件来降低成本和提高机械性能以满足实际应用的需求仍然存在挑战。在这里，我们报告了一种稳健而高效的自下而上策略，采用微/纳米结构设计，从天然木材颗粒中再生各向同性木材，作为高性能可持续结构材料。再生各向同性木材（RGI-木材）超越了天然木材的各向异性和不一致的机械性能的限制，具有〜170 MPa的各向同性弯曲强度和〜10 GPa的弯曲模量。 RGI-wood 还表现出优于天然松木的防水性和阻燃性。还可以实现大尺寸RGI-木材和功能性RGI-木材纳米复合材料的批量生产。