In this paper, poly vinyl chloride (PVC) based nano-hybrid composites of multi-walled carbon nanotube (MWCNT) and barium titanate (BT) are prepared by solution casting technique and their morphology and dielectric characteristics are studied. The presence of barium titanate in hybrid composites is confirmed by X-ray Diffraction. Dielectric and morphological studies of PVC-MWCNT composites and PVC-MWCNT-BT hybrid composites also studied to verify the improvement in dielectric properties of PVC-MWCNT-BT hybrid composite compared to PVC-MWCNT composite. The hybrid composites show improved dielectric properties when BT is incorporated as dielectric filler with multi-walled carbon nanotube in PVC. PVC-MWCNT 1 %-BT 3 % hybrid composite showed the highest dielectric constant and the lowest tan δ value among the composites. This hybrid composite is useful for electromagnetic shielding and supercapacitor applications.
In the present investigation, calcinated tea-based cellulose composite films were fabricated via solution casting technique. The fabricated films were characterized by using Fourier transform infrared spectroscopy and differential scanning calorimetry. The effect of calcinated tea loading on the properties of the calcinated tea-based cellulose composite films was studied. The results were showed that the calcinated tea composite films display better mechanical properties and dielectric constant than the pure cellulose films.
Electroactive hydrogels are attractive for soft robotics and reconfigurable lens applications. Here we describe the design
and fabrication of cellulose-poly vinyl alcohol based hydrogels. The fabricated hydrogels were confirmed by Fourier
transformer spectroscopy, swelling studies, thermal analysis, surface morphology of fabricated hydrogel was study by
using scanning electron microscopy. The effect of poly vinyl alcohol concentration on the optical and electrical behavior
of hydrogels was studied.