Fabrication of Various Types of Si-Ti Fibers or Films by Electrospinning and Heat Treatment

Abstract

In this study, alcohol, DMF, polyvinylpyrrolidone (PVP), Tetraethyl orthosilicate (TEOS), tertbutyl titanate (TBT) and hydrochloric acid (HCl)were stirred until completely mixed, compared with no addition of silicon source or changed the silicon source, through a single electros pinning were prepared by needle electrospinning onto a quartz substrate, and placed in a high-temperature furnace for heat treatment. Nanofibers and films were prepared at different temperatures of 400°C, 600°C, and 800°C. Through scanning electron microscope (SEM), thermogravimetric analysis (TGA), (Contact Angle) analyze the properties of nanofibers or films after heat treatment, explore the effects of temperature, heating rate and time on nanofibers. The results shown that the overall hydrophilicity of the titanium-based system was about 45.356°C. The calcined sample has a film-like structure, which was complete at 800°C. The electrospinning samples with silicon-titanium-based structure maintained the shape of nanofibers after high-temperature calcination, with an average thickness of 141 nm. As the temperature increases, the fiber becomes thinner, reaching 91 nm, and the TEOS material as a silicon source can improve the overall hydrophilicity, which was about 14.67°C.