Autor(es): Sharma, S ; Rani, R ; Rai, R ; Natarajan, TS
Data: 2013
Identificador Persistente: http://hdl.handle.net/10773/20321
Origem: RIA - Repositório Institucional da Universidade de Aveiro
Assunto(s): Cuo nanofiber; Electrospinning; Ftir; Sem; Tem
One dimensional nanofibers of organic and inorganic materials have been used in filters, optoelectronic devices, sensors etc. It is difficult to obtain ultra fine fibers of inorganic materials having lengths in the order of millimeter as they tend to break during formation due to thermal and other mechanical stresses. In this study, we have investigated the mechanism to prevent the defect formation and the breaking of CuO nanofibers by using optimized heat flow rates. CuO nanofibers were obtained by heat treating the poly(vinyl acetate) PVA composite fibers formed by electrospinning. The morphology and structural characteristics of prepared samples were investigated by Scanning electron microscopy, Transmission electron microscopy and X-ray diffraction. It was found that the morphology of the composite and annealed nanofibers could be influenced by the concentration of the polymer content. A lower concentration favors the formation of defects along the fiber and the number of defects reduces when the concentration is increased. © 2013 VBRI press.
