纳米纤维素序构材料界面力学行为和设计的研究进展

Research progress of interfacial mechanical behavior and design of nanocellulose-based sequentially architected materials

纳米纤维素是具有优异力学性能的可再生天然生物质材料,基于纳米纤维素的序构材料有望成为新一代高性能结构和功能材料并引领可持续发展.合理构建界面力学行为和材料微结构之间的非线性耦合关系是纳米纤维素序构材料强韧化设计研究的关键.本文综述了目前纳米纤维素序构材料界面力学行为和设计的研究进展.重点讨论了纳米纤维素的界面氢键行为、多尺度界面力学以及一些典型的界面和序构设计案例,总结并展望了下一步研究工作的重点方向,旨在从微纳米力学和多尺度力学的视角为设计和制备高性能纳米纤维素序构材料提供新思路.

Nanocellulose exhibits superior mechanical properties and is a renewable natural biomass material.Nanocellulose-based sequentially architected materials are expected to become a new generation of environment-friendly high-performance structural and functional materials leading sustainable development.The construction of reasonable multiscale nonlinear coupling relationship between interfacial mechanical behavior and material microstructure is pivotal to the strengthening-toughening design of nanocellulose-based materials.Recent research progress of interfacial mechanical behavior and design of nanocellulose-based sequentially architected materials was reviewed here.The interfacial hydrogen-bonding behavior,multiscale interfacial mechanics,and some design cases of interfaces and microstructures were discussed.At last,the summary and perspective of key points in this field were given.This paper would aim to provide new perspectives for the design and preparation of high-performance nanocellulose-based sequentially architected materials based on micro-nano mechanics and multiscale mechanics.