Fabrication and electrical properties of regenerated cellulose-loaded exfoliated graphene nanoplatelet composites

초록

Eco-friendly nanocomposites were fabricated by incorporating regenerated cellulose into an exfoliated graphene nanoplatelets (GNPs), resulting in the intercalation of GnPs. The thermal and electrical properties of hybrid nanocomposites were investigated and structural detail is evidenced by scanning electron microscope (SEM) and X-ray diffraction analyses (XRD). Strong frequency-dependent dielectric response was found due to the change of the permittivity and the loss tangent of nanocomposites by different content of RC, which is associated with the polarizations behavior. Non-elastic relaxation at the GNPs-RC chains interfacial areas in an alternating field was identified as the main cause of polarization losses among others. Detailed ferroelectric measurements show the resistive behavior of the nanocomposites, which are confirmed by the resistivity measurements along the out-of-plane direction of the nanocomposite.