Electric Field and Ion Diffusion Triggered Precisely Regulated Construction of Micron-scale Water-based Polymer Films:a Detailed Mechanistic Exploration

作     者：WANG Dan LIU Jinfang YANG Shuqi JI Xin WANG Yuliang OMONIYI Ahmed Olalekan ZHANG Jianfu SU Zhongmin WANG Dan;LIU Jinfang;YANG Shuqi;JI Xin;WANG Yuliang;OMONIYI Ahmed Olalekan;ZHANG Jianfu;SU Zhongmin

作者机构：School of Materials Science and EngineeringChangchun University of Science and TechnologyChangchun130022P.R.China School of Chemistry and Environmental EngineeringChangchun University of Science and TechnologyChangchun130022P.R.China Jilin Provincial Science and Technology Innovation Center of Optical Materials and ChemistryChangchun University of Science and TechnologyChangchun130022P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2022年第38卷第6期

页      面：1435-1445页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the Science and Technology Development Planning Project of Jilin Province,China (No.20200401037GX) the National Natural Science Foundation of China (No.21504008) 

主　　题：Polymer film Emulsion Demulsification-induced fast solidification Mechanism 

摘      要：Water-based polymer films can be readily deposited onto a wide range of metallic materials as an environmentally friendly coating through the demulsification-induced fast solidification(DIFS)***,there is still a lack of in-depth understanding of the demulsification process of the water-based emulsions and their deposition ***,we demonstrate that the build-up process of the commercial water-based micron-scale waterborne polyurethane,polyvinyl acetate,polyurethane acrylate,and natural rubber polymer films is affected by the collective effect of electric field and ion diffusion exerted by anode-cathode electrode pairs,applied voltage,conduction time,electrode distance,and emulsion species.A structural investigation of as-prepared polymer films allows us to propose two new structure build-up *** a flat film deposition,isolated islands are formed first and grow on the substrate surface,and eventually,their mutual coalescence forms the final ***,for a convex layer formation,the layer is first formed in the middle of the substrate and then grows toward the sides of the convex structure of the *** results presented in this work expand the understanding of the mechanism of the DIFS process and may provide some new insights into structure-oriented multifunctional material design.