超滑聚酯纤维膜及其抗污染性能  

Antifouling Properties of Super Slippery Polyester Fiber Membrane

作　　者：尚琰龙 李日舜 姚安锋 赵莉芝[1] 辛清萍 丁晓莉[1] 李泓[1] 张玉忠[1] Yanlong Shang;Rishun Li;Anfeng Yao;Lizhi Zhao;Qingping Xin;Xiaoli Ding;Hong Li;Yuzhong Zhang(State Key Laboratory of Separation Membranes and Membrane Processes,School of Materials Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学省部共建分离膜与膜过程国家重点实验室材料科学与工程学院,天津300387

出　　处：《高分子材料科学与工程》2022年第5期102-111,共10页Polymer Materials Science & Engineering

基　　金：国家重点研发计划(2017YFC0404001);国家自然科学基金资助项目(21978216);天津市大学生创新创业训练计划(202010058075)。

摘　　要：以聚对苯二甲酸乙二醇酯(PET)纤维膜为基底,利用聚多巴胺(PDA)对膜表面进行活化,通过溶胶凝胶法在膜表面构筑二氧化硅(SiO_(2))纳米粗糙结构,进一步降低其表面能并灌注润滑油,制备得到超滑聚酯纤维膜(PET-SLIPS)。在PDA作用下,SiO_(2)纳米粒子均匀分布在膜表面,并且与基底结合牢固,在超声作用或轻度物理摩擦下,表现出良好的稳定性。SiO_(2)纳米级粗糙结构特点使其具有优异的润滑油锁定能力,PET-SLIPS在受到水流剪切或物理磨损后,表面接触角基本不变,润滑层稳定性良好。这种具有流动性的润滑层可抑制与之不互溶的液体与膜基底接触,使污染物易被冲洗去除,赋予PET-SLIPS优异的疏液性;与PET原膜相比,PET-SLIPS油水分离效率和抗污染性都得到明显提升,同时表现出良好的抗生物黏附性能。这种超滑膜在膜分离等方面具有良好的应用前景。Poly(ethylene terephthalate)(PET)fiber membrane was used as substrate,and the super slippery membrane(PET-SLIPS)was fabricated by the successive treatment of activation with polyamine(PDA),surface roughening with silica(SiO_(2))nanoparticles produced by sol-gel process,fluorination and lubricant filling.In the presence of PDA,SiO_(2) nanoparticles are evenly distributed on the membrane surface and robustly connected with the substrate even when subjected to ultrasonic shaken or slight abrasion.The nanotextured silica coating shows good a lubricant-locking ability.The contact angle of PET-SLIPS is almost unchanged after water flowing shear or abrasion,indicating the stability of the lubricant layer.The lubricant layer with fluidity can prevent immiscible liquids from contacting the membrane substrate,so that the contaminants are easy to be washed and removed and PET-SLIPS is endowed with excellent liquid repellency.Compared with the original PET membrane,PET-SLIPS shows the significantly improved oil-water separation efficiency and antifouling property.In addition,the slippery membrane exhibits outstanding the resistance against adhesion of biofoulings.This membrane with slippery surfaces may have application prospects in membrane separation.

关 键 词：超滑表面 溶胶凝胶 抗污染 抗黏附 

分 类 号：TQ051.893[化学工程]