P(VDF-HFP)-SiO_(2)/SF电纺Janus纤维膜的制备及油水分离应用  

Preparation of P(VDF-HFP)-SiO_(2)/SF electrospun Janus membranes for oil/water separation

作　　者：刘建春 武海娟 方涛 徐帅 马彦龙[1] 朱晶心[1] LIU Jianchun;WU Haijuan;FANG Tao;XU Shuai;MA Yanlong;ZHU Jingxin(College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Xin ZeSheng Technology Co., Ltd., Weinan 711711, China)

机构地区：[1]太原理工大学材料科学与工程学院,太原030024 [2]鑫泽晟科技有限公司,陕西渭南711711

出　　处：《功能材料》2022年第1期1204-1209,1215,共7页Journal of Functional Materials

基　　金：山西省自然科学基金项目(201801D121102)。

摘　　要：以疏水纳米SiO_(2)改性的聚偏氟乙烯-六氟丙烯共聚物(P(VDF-HFP)-SiO_(2))和丝素蛋白(SF)为原料,利用静电纺丝技术,构建了具有非对称润湿性的P(VDF-HFP)-SiO_(2)/SF复合Janus纳米纤维膜。采用扫描电子显微镜、X射线能谱仪、傅里叶红外光谱仪及水接触角测量仪对纤维膜的微观形貌、组成、结构及润湿性进行了表征,并测试了Janus纤维膜的疏水层厚度对油水分离通量及分离效率的影响。结果表明,采用P(VDF-HFP)-SiO_(2)纤维膜为疏水层,SF纤维膜为亲水层构建的Janus纤维膜具有单向水渗透功能及良好的油水分离能力;当疏水层厚度为70μm,亲水层厚度为130μm时,水分离通量可达到了11300 L/(m^(2)·h·MPa),油水分离效率可达99.65%,该研究为Janus油水分离膜的制备提供了新的材料选择。The P(VDF-HFP)-SiO_(2)/SF composite Janus nanofibrous membrane with asymmetric wettability is fabricated by electrospinning technology,using the hydrophobic nano-SiO_(2) modified polyvinylidene fluoro-hexafluoropropylene(P(VDF-HFP))copolymer and silk fibroin(SF)as raw materials.The micro-morphology,composition,structure and the wettability of the fibrous membrane are characterized by scanning electron microscope,X-ray energy spectrometer,Fourier transform infrared spectrometer and water contact angle measuring instrument,and the influence of the thickness of hydrophobic layer on oil-water separation flux and separation efficiency is tested.The results show that the Janus fibrous membrane constructed with P(VDF-HFP)-SiO_(2) fibrous membrane as hydrophobic layer and SF fibrous membrane as hydrophilic layer has one-way water permeation function and good oil-water separation ability.When the thickness of hydrophobic layer is 70μm and the thickness of hydrophilic layer is 130μm,the water separation flux reaches 11300 L/(m^(2)·h·MPa),and the oil-water separation efficiency reaches 99.65%.This study provides a new material choice for the preparation of Janus oil-water separation membrane.

关 键 词：丝素蛋白 P(VDF-HFP) SiO_(2) 电纺Janus膜 油水分离 

分 类 号：X703[环境科学与工程—环境工程] TQ051.893[化学工程] TQ340.64