Abstract:
In this research, two solid bio-polymer electrolyte (SBE) systems of an
unplasticized carboxyl methylcellulose doped with oleic acid (CMC–OA) and
a similar system plasticized with Glycerol (CMC–OA–Gly) have been
successfully prepared by solution casting technique. Both SBEs system were
free-standing, transparent with no phase separation films. Fourier Transform
Infrared (FTIR) analysis reveals that complexations have occurred between
CMC and OA at 2850 cm
-1
-1
, 2920 cm
-1
and 1597 cm
. No significant
complexation was observed with the addition of Gly, hence, Gly has acted as
a new pathway which helped in the hopping of H
+
to other coordinating sites
of carboxylate anion (COO¯) moiety in CMC. X–Ray Diffraction (XRD)
analysis showed the structure of CMC–OA and CMC–OA–Gly as both
amorphous. CMC–OA SBE had crystallinity which increased from 9.35 Å to
11.41 Å upon addition of OA till 20 wt. % of OA (OA–20). With the addition of
plasticizer (Gly) into CMC–OA SBE, XRD analysis showed that Gly had
increased the amorphousness of the SBEs.
