Zhang Yajun, Zheng Xiangwen, Jiang Weitao, Han Jie, Pu Jiangtao, Wang Lanlan, Lei Biao, Chen Bangdao, Shi Yongsheng, Yin Lei, Liu Hongzhong, Luo Feng, Liu Xiaokang, Chen Jinju
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University Xi'an 710054 China
Shaanxi Joint Laboratory for Graphene China.
RSC Adv. 2019 May 15;9(27):15238-15245. doi: 10.1039/c9ra00507b. eCollection 2019 May 14.
Nanocomposites composed by polymeric matrix with micro/nano fillers have drawn lots of attention since their dramatic properties beyond pristine polymers. The spatial distribution of the micro/nano fillers in the polymeric matrix determines the final desired properties of the nanocomposites, thus deserves to investigate. Here, we proposed an effective method of assembling the micro/nano fillers to pre-designed patterns within the polymeric matrix by AC-electro-field-assisted aligning. By pre-designed AC electric fields which could be dynamically controllable, the distribution of microparticles (acting as fillers) in the matrix was tuned to various patterns related to the electric fields, such as linear alignment and circular alignment. The field-oriented particles chains could act as endoskeletal structures, showing unique properties (, mechanical, optical, and anisotropic properties) beyond those of the conventional composites with randomly distributed particles.
由聚合物基体与微/纳米填料组成的纳米复合材料，因其具有超越原始聚合物的显著性能，自问世以来便备受关注。微/纳米填料在聚合物基体中的空间分布决定了纳米复合材料最终所需的性能，因此值得深入研究。在此，我们提出了一种通过交流电场辅助排列，将微/纳米填料组装成聚合物基体内预先设计图案的有效方法。通过可动态控制的预先设计的交流电场，基体中作为填料的微粒分布被调整为与电场相关的各种图案，如线性排列和圆形排列。场取向的粒子链可作为内骨骼结构，展现出超越传统随机分布粒子复合材料的独特性能（如机械、光学和各向异性性能）。
