Preparation and Characterization of Electrospun EVOH/TiC Composite Fibers.

In this work, the EVOH/TiC composite fibers were prepared via electrospinning and the effect of added TiC on the structure and properties of electrospun EVOH fibrous membranes was further investigated. The morphology, crystal structure, thermal properties, wettability, tensile properties, as well as air permeability and water vapor permeability of as-prepared EVOH/TiC composite fibers were studied. The TiC is uniformly loaded onto the surface and inside the composite fiber and affects the fiber diameters. Furthermore, The TiC self-orients along the fiber axis and does not change the crystal structure of the electrospun EVOH fibers, improving the crystallinity and thermal stability of the electrospun EVOH/TiC fibrous membranes. With the increase in the TiC concentration in the electrospinning polymer solution, the addition of TiC not only rapidly improves the wettability of the fibrous membranes, but also enhances their air permeability, compared with the pristine electrospun EVOH fibrous membranes. The experimental results provide theoretical guidance for the preparation of TiC composite fibers, and also expand the application of electrospun EVOH and EVOH/TiC fibrous membranes.