FTIR was employed to examine and recognize any changes on
PBT and NiO-PBT nanocomposites after applying electrospining
(Fig. 4). The absorption bands at 633 and 725 cm1 correspond to
bending motion of phenyl ring and coupled vibration of carbonyl
out of plane deformation of phenyl group, respectively. Also, the
absorption bands appeared at 1268 and 1503cm1 correspond to
C—O—C in-plane ring deformation and aromatic ring vibration of
C—C group, respectively. The absorption bands at 1720cm1
correspond to C¼O stretching vibration of PBT. However, the
spectrum of NiO-PBT nanocomposite exhibits newabsorption peak
appeared at 466 cm1, which is attributed to the presence of NiO in
the nanocomposite