PVDF/TiO2杂化纤维膜的制备及其性能分析

采用静电纺丝的方法制备聚偏氟乙烯（PVDF）/二氧化钛（TiO2）杂化纤维膜，并利用扫描电子显微镜、X射线衍射仪和可见分光光度计等仪器对杂化纤维膜的微观形貌、晶体结构、力学性能以及光催化性能进行研究与分析。结果表明，随着TiO2添加量的增加，PVDF/TiO2杂化纤维膜表面暴露的TiO2增加；杂化纤维膜的拉伸强度呈现先增后减的趋势；且杂化纤维膜的光催化降解能力逐渐增强；同时PVDF/TiO2杂化纤维膜具有良好的重复利用性。

Preparations and Properties of PVDF/TiO2 Hybrid Fiber Membranes

PVDF/TiO2 hybrid fiber membranes were prepared by an electrospinning method,and their morphology,crystalline structure and photocatalytic performance were investigated by using SEM,XRD and visible spectrophotometer.The results indicated that there were more TiO2 particles exposed onto the surface of the hybrid fiber membranes with an increase of TiO2 content. The hybrid fiber membranes presented an increase trend in tensile strength with an increase of TiO2 content at first,and then the tensile strength tended to decrease. Their photocatalytic degradation ability was also gradually enhanced with the increase of TiO2 content. Moreover,the hybrid fiber membranes exhibited a good recyclability.