Abstract
Different filling levels (FL) of lithium titanate nanoparticles (Li
4
Ti
5
O
12
NPs) were added to polyethylene oxide/carboxymethyl cellulose (PEO/CMC, 70/30 wt%) blend. XRD technique showed that the degree of crystallinity for nanocomposit samples was decreased and depicted the presence of cubic-structure Li
4
Ti
5
O
12
NPs within PEO/CMC matrix. FT-IR spectra manifested the hydrogen bond formation between the blend components and the dependence of functional groups absorbance on the FL of NPs, where the interaction between these groups (such as ether and carboxylate groups) and NPs was indicated. UV/Vis. absorption spectra showed the electronic transition for NPs and the reduction for E
g
of nanocomposite samples as compared to that of pure PEO/CMC blend. The DSC curves showed the reduction in the values of the glass transition and melting point temperatures for nanocomposite samples. The AC conductivity and dielectric parameters for the nanocomposite samples was improved and discussed properly. For the nanocomposite sample with high FL, the dependence of AC conductivity and dielectric parameters on temperature was investigated. TEM micrograph showed the cubic shape for NPs with size range 27–55 nm. Finally, these nanocomposites can be utilized in a various industrial and electrochemical fields such as Li-ion batteries.