Zhang Qian, Sun Yingzhi, He Chengzhi, Shi Feng, Cheng Mengjiao
State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials & Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China.
Adv Sci (Weinh). 2020 Oct 16;7(23):2002025. doi: 10.1002/advs.202002025. eCollection 2020 Dec.
Integration of diverse materials into 3D ordered structures is urgently required for advanced manufacture owing to increase in demand for high-performance products. Most additive manufacturing techniques mainly focus on simply combining different equipment, while interfacial binding of distinctive materials remains a fundamental problem. Increasing studies on macroscopic supramolecular assembly (MSA) have revealed efficient interfacial interactions based on multivalency of supramolecular interactions facilitated by a "flexible spacing coating." To demonstrate facile fabrication of 3D heterogeneous ordered structures, the combination of MSA and magnetic field-assisted alignment has been developed as a new methodology for in situ integration of a wide range of materials, including elastomer, resin, plastics, metal, and quartz glass, with modulus ranging from tens of MPa to over 70 GPa. Assembly of single material, coassembly of two to four distinctive materials, and 3D alignment of "bridge-like" and "cross-stacked" heterogeneous structures are demonstrated. This methodology has provided a new solution to mild and efficient assembly of multiple materials at the macroscopic scale, which holds promise for advanced fabrication in fields of tissue engineering, electronic devices, and actuators.
由于对高性能产品的需求增加，先进制造迫切需要将多种材料集成到三维有序结构中。大多数增材制造技术主要侧重于简单地组合不同设备，而不同材料之间的界面结合仍然是一个基本问题。越来越多关于宏观超分子组装（MSA）的研究表明，基于“柔性间隔涂层”促进的超分子相互作用的多价性，存在有效的界面相互作用。为了证明三维异质有序结构的简便制造，MSA与磁场辅助排列的结合已被开发为一种新方法，用于原位集成包括弹性体、树脂、塑料、金属和石英玻璃在内的广泛材料，其模量范围从几十兆帕到超过70吉帕。展示了单一材料的组装、两到四种不同材料的共组装以及“桥状”和“交叉堆叠”异质结构的三维排列。该方法为宏观尺度上多种材料的温和高效组装提供了新的解决方案，有望在组织工程、电子设备和致动器等领域实现先进制造。
