熔体微分静电纺PBAT纤维膜的制备工艺研究

Preparation process of PBAT fiber membrane by melt differential electrospinning

探究了聚己二酸对苯二甲酸丁二醇酯(PBAT)熔体静电纺性能,并研究了熔体微分静电纺工艺参数与PBAT纤维性能之间的关系。结果表明,随着纺丝温度的升高,纤维直径减小,纤维直径分布呈先减小后增大的趋势;随着纺丝电压的升高,纤维直径减小且分布均匀,纤维膜力学性能逐渐提高;当纺丝距离为9 cm,纺丝温度为260℃,纺丝电压为45 kV时,制备的纤维细度及均匀度最佳,其直径为4.31μm,直径分布标准差为0.76,纤维膜拉伸强度为9.9 MPa、断裂伸长率为111.2%。

The melt-electrospinning performance of poly(butyleneadipate-co-terephthalate)(PBAT)was investigated,and the relationship between the melt differential electrospinning process parameters and properties of the resultant PBAT fibers were studied. The results indicated that the fiber diameter decreased and its diameter distribution decreased at first and then tended to increase with an increase in spinning temperature. With an increase in spinning voltage,the fiber diameter decreased and the distribution was uniform. Meanwhile,the mechanical properties of the fiber membranes were improve gradually. The optimal fiber fineness and uniformity were obtained at a spinning distance of 9 cm,a spinning temperature of 260 ℃,and a spinning voltage of 45 kV. The obtained fibers exhibited a diameter of 4. 31 μm,a standard diameter distribution deviation of 0. 76. The fiber membranes obtained tensile strength of 9. 9 MPa and elongation at break of 111. 2 %.