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基于电纺丝和电喷雾技术的原理相似性,该文联合使用这2种技术来一步获得珠丝状的纤维复合物。通过使聚乙烯醇溶液和聚乙烯吡咯烷酮溶液分别从对喷电纺丝装置的两个喷丝头以电纺丝和电喷雾的模式进行喷射,获得纳米纤维和微米颗粒,纤维与颗粒相互碰撞结合从而得到表面带有颗粒的纤维复合物。结果表明:电喷雾得到的颗粒较均匀地附着于电纺丝纤维表面,复合纤维束经过旋转收集装置的牵引可以呈现良好的单方向有序排列;通过改变电喷雾的喷射介质的质量分数可以改变复合纤维的形貌;当提高溶液的质量分数使得射流的喷射模式由电喷雾转变为电纺丝时,纤维复合物的珠丝状结构将被消除,并且使得纤维束的排列有序度变差。
Based on the principle similarity between electrospinning and electrospray techniques, the paper uses these two techniques in one step to obtain bead-like fiber composites. The nanofibers and the microparticles were obtained by spraying the solution of polyvinyl alcohol and the solution of polyvinylpyrrolidone, respectively, from the two spinnerets of the electrospinning device in the mode of electrospinning and electrospraying, the collisions of the fibers and the particles with each other Thereby obtaining a fiber composite having particles on the surface. The results show that the electrosprayed particles are more uniformly attached to the surface of the electrospun fibers. The composite fiber bundles can be arranged in a unidirectional order by the rotation of the collecting device. The mass fraction of the sprayed medium can be changed by changing the electrospray. Composite fiber morphology; when increasing the mass fraction of the solution so that the jet spray mode from electrospray to electrospinning, the fiber composite bead-like structure will be eliminated, and make the order of the fiber bundle becomes poor .