Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
State Key Laboratory of Bio-based Materials and Green Papermaking, Qilu University of Technology, Jinan 250353, People's Republic of China.
ACS Nano. 2022 Sep 27;16(9):13468-13491. doi: 10.1021/acsnano.2c04883. Epub 2022 Sep 8.
Naturally derived cellulose nanomaterials (CNMs) with desirable physicochemical properties have drawn tremendous attention for their versatile applications in a broad range of fields. More recently, Janus amphiphilic cellulose nanomaterial particles with asymmetric structures (i.e., reducing and nonreducing ends and crystalline and amorphous domains) have been in the spotlight, offering a rich and sophisticated toolbox for Janus nanomaterials. With careful surface and interfacial engineering, Janus CNM particles have demonstrated great potential as surface modifiers, emulsifiers, stabilizers, compatibilizers, and dispersants in emulsions, nanocomposites, and suspensions. Naturally derived Janus CNM particles offer a fascinating opportunity for scaling up the production of self-standing Janus CNM membranes. Nevertheless, most Janus CNM membranes to date are constructed by asymmetric fabrication or asymmetric modification without considering the Janus traits of CNM particles. More future research should focus on the self-assembly of Janus CNM particles into bulk self-standing Janus CNM membranes to enable more straightforward and sustainable approaches for Janus membranes. This review explores the fabrication, structure-property relationship, and Janus configuration mechanisms of Janus CNM particles and membranes. Janus CNM membranes are highlighted for their versatile applications in liquid, thermal, and light management. This review also highlights the significant advances and future perspectives in the construction and application of sustainable Janus CNM particles and membranes.
具有理想物理化学性能的天然衍生纤维素纳米材料 (CNMs) 因其在广泛领域中的多功能应用而受到极大关注。最近，具有不对称结构（即还原端和非还原端、结晶区和无定形区）的 Janus 两亲性纤维素纳米材料颗粒成为焦点，为 Janus 纳米材料提供了丰富而复杂的工具。通过仔细的表面和界面工程，Janus CNM 颗粒已被证明具有作为表面改性剂、乳化剂、稳定剂、增容剂和分散剂在乳液、纳米复合材料和悬浮液中的巨大潜力。天然衍生的 Janus CNM 颗粒为大规模生产自支撑 Janus CNM 膜提供了一个引人入胜的机会。然而，迄今为止，大多数 Janus CNM 膜都是通过不对称制造或不对称修饰构建的，而没有考虑到 CNM 颗粒的 Janus 特性。未来更多的研究应该集中在 Janus CNM 颗粒自组装成大块自支撑 Janus CNM 膜上，以实现更简单和可持续的 Janus 膜方法。本综述探讨了 Janus CNM 颗粒和膜的制造、结构-性能关系和 Janus 构型机制。Janus CNM 膜因其在液体、热和光管理方面的多功能应用而受到关注。本综述还强调了可持续 Janus CNM 颗粒和膜的构建和应用方面的重要进展和未来展望。
