The present work discusses the structural studies of dual blended solid biopolymer electrolytes
(SBEs) based carboxymethyl cellulose (CMC)/chitosan (CS) doped with various
ammonium bromide (AB) composition using solution casting technique. X-ray Diffraction
(XRD) result reveal that all samples are completely amorphous except for sample Ab-30.
FTIR analysis shows interaction has occurred between CMC/CS and NH4Br. Analysis of
transport properties has shown that the dependency of ionic conductivity was on the ionic
mobility, µ and diffusion coefficient, D of mobile ion.