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Smart Materials Congress 2019
Nano Research and Applications
ISSN: 2471-9838
Page 46
August 01-02, 2019
Dublin, Ireland
Smart Materials and
Structures
8
th
International Conference on
Nano Res Appl 2019, Volume 05
Improve spectroscopic structural and AC electrical
conductivity of PC/PEO blend using graphene
Hind Alghamdi
University of Jeddah, Saudi Arabia
N
anocomposites of polycarbonate (PC) and
polyethylene oxide (PEO) embedded with graphene
oxide (GO) nanopowder have been prepared using
casting method. Prepared nanocomposites are studied
and investigated using different characterization
techniques. The X-ray diffraction (XRD) pattern reveals
the semi-crystalline nature of PC/PEO blend. There are
no significant peaks characterizing pure graphene. The
intensity of the main X-ray peak characterizing the blend
is decreased with the increase of graphene content
confirming a modification in the blend due to an addition
of graphene oxide. The FT-IR spectra display the main
characteristic IR bands due to vibrational function groups
for the components. The Optical absorption spectra are
measured as a function of wavelength in the range of
190–1100 nm. The UV/V spectra show two absorption
bands at 290 and 620 nm due to electronic transitions.
The value of Eg is obtained using indirect transition and
its decrease with increasing the amount of graphene.
The behavior of ε′ and ε″ decreased with the increase
of frequencies is observed. After adding graphene, the
frequency is increased due to the dipole moment. The
decrease of ε″ with increases of both the frequency
and the temperature attributed to the origin of ε″ is the
conduction losses. The decrease of dissipation factor
(tan δ) is ascribed to the internal polarization mechanism
related to applied frequencies. Themaximumvalue of the
peak at M″ relation explained as being the result of the
distribution of relaxation time.
halhusiki@kau.edu.sa