Zhang Yuanyuan, Zhu Guangming, Dong Biqin, Wang Feng, Tang Jiaoning, Stadler Florian J, Yang Guanghui, Hong Shuxian, Xing Feng
Department of Civil and Transportation Engineering, Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, 518060, Shenzhen, People's Republic of China.
College of Materials Science and Engineering, Shenzhen University, 518071, Shenzhen, People's Republic of China.
Nat Commun. 2021 Jan 4;12(1):111. doi: 10.1038/s41467-020-20299-6.
Three-dimensional (3D) nanocomposite (NC) printing has emerged as a major approach to translate nanomaterial physical properties to 3D geometries. However, 3D printing of conventional NCs with polymer matrix lacks control over nanomaterial connection that facilitates maximizing nanomaterial advantages. Thus, a printable NC that features nanomaterials matrix necessitates development, nevertheless, faces a challenge in preparation because of the trade-off between viscosity and interfacial stability. Here, we develop viscoelastic Pickering emulgels as NC inks through jamming nanomaterials on interfaces and in continuous phase. Emulgel composed of multiphases allow a vast range of composition options and superior printability. The excellent attributes initiate NC with spatial control over geometrics and functions through 3D printing of graphene oxide/phase-change materials emulgel, for instance. This versatile approach provides the means for architecting NCs with nanomaterial continuous phase whose performance does not constrain the vast array of available nanomaterials and allows for arbitrary hybridization and patterns.
三维（3D）纳米复合材料（NC）打印已成为将纳米材料物理特性转化为三维几何形状的主要方法。然而，具有聚合物基质的传统纳米复合材料的3D打印缺乏对纳米材料连接的控制，而这种控制有助于最大限度地发挥纳米材料的优势。因此，一种以纳米材料为基质的可打印纳米复合材料有必要进行开发，不过，由于粘度和界面稳定性之间的权衡，其制备面临挑战。在此，我们通过在界面和连续相中堵塞纳米材料，开发出了作为NC油墨的粘弹性皮克林乳液凝胶。由多相组成的乳液凝胶允许有广泛的成分选择和卓越的可打印性。例如，通过氧化石墨烯/相变材料乳液凝胶的3D打印，这些优异的特性可实现对几何形状和功能具有空间控制的纳米复合材料。这种通用方法为构建具有纳米材料连续相的纳米复合材料提供了手段，其性能不会限制大量可用纳米材料的使用，并且允许任意杂交和图案化。
