超疏水聚酯纤维织物的制备及其油水分离性能研究

Preparation of Superhydrophobic Polyester Fabric and Its Oil-water Separation Property

为获得可用于油水分离的超疏水聚酯纤维织物,本研究以正硅酸乙酯(TEOS)为硅源,以氟硅烷(FAS)为疏水改性剂,采用一步法制备了负载有SiO_(2)纳米粒子的超疏水织物,并将其用于水和柴油混合物的分离。采用扫描电镜、接触角测试仪、红外光谱仪和X射线光电子能谱仪以及油水分离试验对超疏水聚酯纤维织物的表观形貌、亲疏水性、化学组分、油水分离性能以及耐水洗性进行了表征和测试。结果表明:浸涂之后,聚酯纤维织物的水接触角可达156.2°,首次用于体积比为1∶1的柴油和水的混合物分离时,其分离效率可达98.32%,并且经过30次重复使用后,分离效率仍能达到91%以上。

In this study,superhydrophobic polyester fabric with silica nanoparticles was obtained through one-step method by using tetraethyl orthosilicate as silicon source and fluoroalkyl silane as hydrophobic agent.The scanning electron microscope,contact angle tester,Fourier transform infrared spectroscopy,and X-ray photoelectron spectrophotometer were used to characterize the surface morphology,wettability and chemical composition of the fabric.Besides,the oil water separation property was calculated.The water contact angle of the prepared polyester fabric was 156.2°,and the oil water separation efficiency was 98.32% for the first time and higher than 91% after 30 separation circles.