▎ 摘　　要

Chemically prepared reduced graphene oxide (rGO) and polyaniline (PANI) nanocomposites were synthesized by in situ polymerization monomer of aniline with reduced graphene oxide in acid medium. The rGO/PANI composites were mixed with 10wt% poly(caprolactone) (PCL), and subsequently, the polymeric solution is fabricated into nanofiber by electrospinning method. The XRD data reveal one strong peak at 2 theta = 21.3 degrees corresponding to (110) lattice plane for PCL and another two peaks at 24.4 degrees and 30.5 degrees which are indexed at (002) and (322) for rGO and PANI, respectively. The morphology, chemical bonding, microstructure, elemental composition, and optical properties of the rGO/PANI/PCL nanofiber were analyzed by scanning electron microscope, FTIR, Raman, X-ray photoelectron spectroscopy (XPS), UV-visible spectroscopy and photoluminescence spectroscopy, respectively. The Gaussian deconvolution peaks in XPS spectra predict the binding energy of the core orbital in the nanofibers. Moreover, the optical band gap was found to decreases from 4.23 to 4.21 eV with the incorporation of PANI into the electrospun nanofiber.