Green Fabrication of Underwater Superoleophobic Biopolymeric Nanofibrous Membranes for Effective Oil-Water Separation  

作　　者：Subin Oh Junsik Bang Hyoung‑Joon Jin Hyo Won Kwak 

机构地区：[1]Program in Environmental and Polymer Engineering,Inha University,100 Inha‑Ro,Michuhol‑Gu,Incheon 22212,South Korea [2]Department of Agriculture,Forestry and Bioresources,College of Agriculture and Life Sciences,Seoul National University,1 Gwanak‑Ro,Gwanak‑Gu,Seoul 08826,South Korea [3]Department of Polymer Science and Engineering,Inha University,100 Inha‑Ro,Michuhol‑Gu,Incheon 22212,South Korea [4]Research Institute of Agriculture and Life Sciences,Seoul National University,1 Gwanak‑Ro,Gwanak‑Gu,Seoul 08826,South Korea

出　　处：《Advanced Fiber Materials》2023年第2期603-616,共14页先进纤维材料（英文）

基　　金：supported by the Technology Innovation Program(20018540);funded by the Ministry of Trade,Industry and Energy(MOTIE,Korea);supported by the Basic Science Research Program of the National Research Foundation of Korea(NRF);funded by the Ministry of Education(NRF-2021R1A4A2001403).

摘　　要：Currently,most of the materials for oil-water separation membranes are limited to fluorine-based polymers with low surface energy.However,it is not biodegradable and requires large amounts of organic and toxic solvents in the membrane manufacturing process.Therefore,interest in the development of a new eco-friendly oil-water separation membrane that does not cause secondary pollution and exhibits selective wettability characteristics in water or oil is increasing.The biopolymeric nanofibrous membranes inspired by fish skin can provide specific underwater oleophobicity,which is effective for excellent oil-water separation efficiency and prevention of secondary contamination.Fish gelatin,which is highly soluble in water and has a low gelation temperature,can be electrospun in an aqueous solution and has the same polar functional groups as the hydrophilic mucilage of fish skin.In addition,the micro/nanostructure of fish skin,which induces superoleophobicity in water,introduces a bead-on-string structure using the Rayleigh instability of electrospinning.The solubility of fish gelatin in water was removed using an eco-friendly crosslinking method using reducing sugars.Fish skin-mimicking materials successfully separated suspended oil and emulsified oil,with a maximum flux of 2086 Lm^(−2) h^(−1) and a separation efficiency of more than 99%.The proposed biopolymeric nanofibrous membranes use fish gelatin,which can be extracted from fish waste and has excellent biodegradability with excellent oil-water separation performance.In addition,polymer material processing,including membrane manufacturing and crosslinking,can be realized through eco-friendly processes.Therefore,fish skin-inspired biopolymeric membrane is expected to be a promising candidate for a sustainable and effective oil-water separation membrane in the future.

关 键 词：Fish gelatin Nanofibrous membrane Superoleophobicity SUPERHYDROPHILICITY Oil/water separation 

分 类 号：TB383[一般工业技术—材料科学与工程]