Synthesis of ultra-fine α-Al2O3 fibers via electrospinning method

Ultra-fine Al2O3 fibers were synthesized via electrospinning technique using PVP/ethanol polymer solution and aluminium acetate sol followed by calcinations at higher temperature. The formation, crystalline phase, surface morphology, fibers diameter and surface area of alumina ultra-fine fibers were characterized using FT-IR. TGA/DTA, XRD, SEM, TEM and BET analytical techniques. The results show that pure and crystalline alpha-Al2O3 ultra-fine fibers were formed with fiber diameter in the range of 100-500 nm and BET surface area of the fibers were found to be 40 m(2)/g. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.