聚丙烯腈(PAN)/TiO_2超细纤维的制备与表征

Preparation and characterization of polyacrylonitrile (PAN)/TiO_2 ultrafine fibers

利用静电纺丝法,采用TiO2凝胶实现了聚丙烯腈(PAN)/TiO2超细纤维的制备。应用TEM、SEM、红外光谱、X射线衍射光谱等方法对其进行了理化性能表征,并测试了其对金黄色葡萄球菌的抗菌性能。结果表明:随PAN溶液与TiO2凝胶质量比的降低,电纺纤维尺寸较均匀,珠状物逐渐减少;该比率(PAN溶液∶TiO2凝胶)为3.5∶1时对金黄色葡萄球菌的抗菌率达到82%。由此制备的超细纤维有望用于过滤膜、防护服及医用敷料等纺织材料领域。

To develope a novel functional composite material for anti-bacterial application, the mixing electrospinning technique was applied to encapsulation of polyacrylonitril （TiO2） solutions into nanofibers. The nanofibers were characterized by using scanning electron microscope （SEM）, transmission electron microscopy （TEM）, Fourier transform infrared spectroscopy （FTIR）, and X-ray diffraction （XRD）. The anti-bacterial performance of the nonwoven mats for Staphylococcus aureus was also measured. Experimental results showed that when the ratio of PAN solution and TiO2 gel was 3.5 ： 1, the resulting fibers were most uniform with the least beads on fiber surface and 82% of the Staphylococcus aureus bacteria were killed. The preliminary results indicated that the attachment of TiO2 into PAN nanofibers led to a significant improvement in its anti-bacterial ability.