article · Journal of Materials Science Materials in Electronics
Carboxymethyl cellulose was blended with low concentrations of polypyrrole to produce composite materials for potential use in cost-effective energy storage systems. Structural testing demonstrated good homogeneity between the polymer matrix and the conductive filler, alongside an improvement in thermal stability following the addition of polypyrrole. Dielectric measurements taken across frequencies between 0.1 Hz and 20 MHz revealed that electrical characteristics were frequency dependent. Incorporating up to 8 weight percent of polypyrrole increased both the dielectric constant and alternating current electrical conductivity by approximately 33 percent. In addition, the dielectric loss at 10 kHz dropped substantially from 3.4938 to 0.93071, supporting the viability of these blends for low-loss electrical applications.
Developing efficient energy storage devices requires materials that combine electrical conductivity with low energy loss and high thermal stability. By demonstrating improved dielectric performance and reduced loss at relatively low additive concentrations, this polymer blend offers an inexpensive route toward more efficient materials for portable electronics, energy storage, and sensor components.
The material is targeted at manufacturers and designers of energy storage systems, batteries, capacitors, and sensors seeking low-cost components with minimal dielectric loss. Given that the abstract reports only laboratory synthesis and physical characterisation of the material blends, this work remains at an early stage of research, requiring further prototype development and device-level testing before commercial uptake.
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Abstract The current work aims to synthesize carboxymethyl cellulose/polypyrrole (CMC/PPy) blends with different PPy concentrations as promising blends for energy storage devices with low cost and excellent chemical and physical characteristics. The structural and dielectric characteristics of CMC/PPy blends were studied. FT-IR spectroscopy is utilized to study the structural properties of the present blends, whereas the dielectric properties are explored at frequency range of 0.1 Hz−20 MHz. The structural study of CMC/PPy blends showed good homogeneity between the CMC matrix and PPy as a conductive filler. The thermal behavior of the present blends was also investigated using DSC, where the thermal stability of the blends was improved after incorporating PPy into the host matrix. The dielectric characteristics results indicated a rise in the dielectric parameters of CMC with an increase in the PPy content up to 8 wt%. The dielectric parameters of CMC/PPy blends are frequency dependents. The dielectric constant (ε′) and AC electrical conductivity of the blends under study enhanced by about 33% with a rise in the PPy content to 8 wt%. The dielectric loss (ε″) values decreased from 3.4938 to 0.93071 at 10 kHz; this performance means that the CMC/PPy blends have an excellent possibility for energy storage devices with low dielectric loss in various applications, such as sensors, batteries, and capacitors.
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DOI: 10.1007/s10854-023-10938-1
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