贻贝仿生矿化超亲水表面膜的制备及其油-水分离性能  

Preparation of mussel-inspired biomineralization superhydrophilic surface membrane for oil-water separation

作　　者：李思诺 刘静 孙凯 李胜海[3] LI Sinuo;LIU Jing;SUN Kai;LI Shenghai(School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China;College of Innovation and Practice,Liaoning Technical University,Fuxin 123000,China;Key Laboratory of Polymer Ecomaterials,Chinese Academy of Sciences,Changchun Institute of Applied Chemistry Chinese Academy of Sciences,Changchun 130022,China)

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000 [2]辽宁工程技术大学创新实践学院,阜新123000 [3]中国科学院生态环境高分子材料重点实验室,中国科学院长春应用化学研究所,长春130022

出　　处：《膜科学与技术》2024年第4期65-74,共10页Membrane Science and Technology

基　　金：国家自然科学基金项目(U22B6012)。

摘　　要：频繁的海洋原油泄漏、无序且随意的工业含油污水排放催生出高效油-水分离材料迫切需求.融合膜分离技术和表面工程策略构建的超亲水膜实现了高效的油-水分离而引发广泛关注.本文利用贻贝仿生矿化的策略,结合贻贝启发快速沉积和层层自组装矿化两步法,在各种膜表面成功制备了界面稳定且具有优异抗污染性能的超亲水/水下超疏油涂层.由于其突出的超亲水和水下驱油能力,涂层膜能够高效分离油-水混合物以及表面活性剂稳定的水包油乳液.此外,由于优异的界面稳定性,超亲水表面膜实现了长效的油-水乳液分离.这些优异的性能加上其简便的制造工艺,使其成为油-水分离的理想材料.Frequent marine crude oil spills and disorderly discharge of industrial oily wastewater have given rise to an urgent demand for efficient oil-water separation materials.Superhydrophilic membranes constructed by integrating membrane separation technology and surface engineering strategies have attracted great attention for achieving efficient oil-water separation.Herein,a mussel inspired mineralization strategy combined with mussel-inspired rapid deposition and layer-by-layer self-assembled mineralization is used to successfully prepare interface-stable superhydrophilic/underwater superoleophobic coatings with excellent self-cleaning properties on various membrane surfaces.Thanks to its outstanding superhydrophilicity and underwater oil repellency,the coated membrane is capable of efficiently separating oil-water mixtures as well as surfactant-stabilized oil-in-water emulsions.In addition,due to the excellent interfacial stability,the superhydrophilic membrane achieves long-term oil-in-water emulsion separation,with the separation efficiency of the coated membrane remaining above 99.2%during 30 times of emulsion separation.These superior properties combined with its facile fabrication process make it an ideal material for oil-water separation.

关 键 词：仿生矿化 自清洁 超亲水 油-水分离 

分 类 号：TQ028.8[化学工程] TQ31