Aggregation-induced demulsification triggered by the hydrophilic fabric for the separation of highly emulsified oil droplets from water  

作　　者：Yu-Rong Zhang Bi-Wei Meng Bin Hao Peng-Cheng Ma 

机构地区：[1]Laboratory of Environmental Science and Technology,The Xinjiang Technical Institute of Physics and Chemistry,Key Laboratory of Functional Materials and Devices for Special Environments,Chinese Academy of Sciences,Urumqi,China [2]Center of Materials Science and Opto-electronic Technology,University of Chinese Academy of Sciences,Beijing,China

出　　处：《Aggregate》2022年第1期178-187,共10页聚集体（英文）

基　　金：Western Light Foundation of Chinese Academy of Sciences,Grant/Award Numbers:2019-XBQNXZB-010,2019-JCTD-001;Poverty Alleviation Program of CAS,Grant/Award Number:KFJ-FP-202103;Program forAttracting High-Level Talents in Xingjiang Uyghur Autonomous Region。

摘　　要：A functional fabric with hierarchical structure consisting of basalt fibre fabric as a substrate and polyvinyl alcohol as a coating was developed,aiming at providing a low cost and high-performance way to separate highly emulsified oil in water.The coating functioned as a hydrophilic gate for the penetration of water in the emulsion,whereas the micro-channels formed in the fabric offered capillary force for the continuous flow of water.The synergy of these two materials led to the increase on the oil concentration in the liquid,which in turn enhanced the collision of emulsified oil droplets to aggregate into large ones in the emulsion and resulted separation from the water.Based on these findings,an aggregation-induced demulsification process was proposed to explain the above phenomenon,and the mechanism was confirmed by studying the distribution of oil droplets in emulsion with a controlled separation degree.

关 键 词：aggregation-induced demulsification basalt fibre emulsion separation hydrophilicity and underwater oleophobicity 

分 类 号：TB30[一般工业技术—材料科学与工程]