Guo Yongshun, Fang Yanxiong, Jia Kangle, Yu Yue, Yu Longfei, Li Huanling, Zhang Junjie, Zheng Xiaoshan, Huang Linjia, Wen Wu, Mai Yuliang
College of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong, 510006, P. R. China.
Guangdong Provincial Key Laboratory of Industrial Surfactant, Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510000, P. R. China.
Macromol Rapid Commun. 2021 Jun;42(11):e2100085. doi: 10.1002/marc.202100085. Epub 2021 Apr 17.
Continuous morphological control of anisotropic particles is always an important challenge in the field of materials. In this study, a new strategy for continuous fabrication of polymer particles with various morphologies induced by electricity is reported using complex emulsions as template. A synthetic electro-responsive surfactant containing ferrocene group is used to prepare complex emulsions, which contain a polymerizable monomer as inner phase. With the increasing time of electrical stimulation on the complex emulsions, hollow, hemispherical, mushroom-like, and spherical particles are constructed successively after photopolymerization. The Marangoni effect caused by the heterogeneity in the interfacial tension at the droplet surface is the reason for the reconfigurable morphology of the complex emulsion. The controllable complex emulsions by electricity present a versatile platform for constructing fine control of the microstructure and shape anisotropy of particles having customized shapes and functionalities, opening a new possibility for designing sophisticated architectures.
在材料领域，对各向异性颗粒进行连续的形态控制一直是一项重大挑战。在本研究中，报告了一种以复合乳液为模板，通过电诱导连续制备具有各种形态的聚合物颗粒的新策略。一种含二茂铁基团的合成电响应表面活性剂用于制备复合乳液，该复合乳液以可聚合单体为内相。随着对复合乳液电刺激时间的增加，光聚合后依次构建出空心、半球形、蘑菇状和球形颗粒。液滴表面界面张力的不均匀性所引起的马兰戈尼效应是复合乳液形态可重构的原因。通过电可控的复合乳液为构建具有定制形状和功能的颗粒的微观结构和形状各向异性的精细控制提供了一个通用平台，为设计复杂结构开辟了新的可能性。
