聚丙撑碳酸酯/聚丙烯腈复合纤维膜的制备和性能的研究
Study on Preparation and Properties of Polypropyl Carbonate/Polyacrylonitrile Composite Fiber Membrane

聚丙撑碳酸酯(PPC)因具有良好的生物相容性、气体阻隔等诸多优点，在很多领域有应用潜力，但因Tg太低，且热学性能差、加工过程易降解等缺点，而限制了其应用。本文通过共轭静电纺丝技术引入聚丙烯腈(PAN)制备出PPC/PAN复合纤维膜以改善PPC的性能，采用正交试验方法确定PAN纤维膜的最佳制备工艺，并对PPC/PAN复合纤维膜的热稳定性和比表面积进行分析。结果发现当PAN浓度为15%、电压为5kV、纺丝速率为0.03 mm/min和针头内径为0.41 mm时，制备的PPC/PAN复合纤维膜的直径最均一，平均直径为1.985 ± 0.457 μm；PAN的引入使PPC纤维膜的最大热分解温度提高了20℃，并使比表面积增大约5倍。
Poly (propylene carbonate) (PPC) has many advantages, such as good biocompatibility and gas barrier, so it has application potential in many fields. Howev-er, its application is limited due to its low Tg, poor thermal performance and easy degradation dur-ing processing. In this paper, Polyacrylonitrile (PAN) was introduced by conjugate electrospinning technology to prepare PPC/PAN composite fiber membrane to improve the performance of PPC. The optimum preparation process of PAN fiber membrane was determined by an orthogonal test, and the thermal stability and specific surface of PPC/PAN composite fiber membrane were analyzed. The results showed that when the concentration of Pan was 15%, the voltage was 5kV, the spinning rate was 0.03mm/min and the inner diameter of the needle was 0.41mm, the diameter of the PPC/PAN composite fiber film was the most uniform, with an average diameter of 1.985±0.457 μ m. The introduction of Pan increased the maximum thermal decomposition temperature of PPC fiber membrane by 20 ？C, and the specific surface is increased by about 5 times.
PPC/PAN Composite Fiber Membrane, Conjugate Electrospinning, Orthogonal Test, Thermal Stability