Thermoelectric properties of Epoxy/SWCNT/Polyaniline ternary nanocomposite
Iswadi Ibrahim Patunrengi (1,2,3*), Ahmed Alshahrie (1), Numan Salah (2).

1 Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
2 Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
3 Department of Physics, Faculty of Science and Technology, Alauddin State Islamic University, Makassar 92118, Indonesia
*E-mail: : wadi.phys.dept[at]uin-alauddin.ac.id

Abstract

In this study, highly conductive single-walled carbon nanotubes (SWCNTs) were employed to establish a conductive network within an epoxy matrix, resulting in the formation of an epoxy/SWCNT nanocomposite with a 4 wt. percent SWCNT loading. To further enhance its electrical performance, the nanocomposite was subsequently incorporated with 3 wt. percent polyaniline (PANI). The thermoelectric (TE) properties of the nanocomposites, both before and after PANI addition, were systematically investigated over a temperature range of 243 K to 348 K. Additionally, power output was evaluated under temperature differentials of 25, 45, and 65 K, at conditions near and slightly above room temperature. Initially, the epoxy/SWCNT nanocomposite exhibited electrical conductivities of 7.51 S/m at 243 K and 9.18 S/m at 348 K, with corresponding Seebeck coefficients of 66 microV/K and 91 microV/K, respectively. The measured power outputs under &#916-T values of 25, 45, and 65 K were 6.20, 11.18, and 18.0 nW, respectively, using a small-leg TE module. Upon the incorporation of PANI, all key thermoelectric parameters, except for the Seebeck coefficient, exhibited notable improvements. The electrical conductivity significantly increased to 224.848 S/m at 243 K and 313.702 S/m at 348 K, while the Seebeck coefficients slightly decreased to 52 microV/K and 56 microV/K, respectively. Correspondingly, the power output demonstrated a general enhancement across all tested temperature differentials. These results clearly indicate that PANI effectively reinforces the thermoelectric performance of the epoxy/SWCNT nanocomposite, underscoring its potential as a promising filler for polymer-based thermoelectric materials

Keywords: TE Properties, Epoxy, SWCNT, Polyanniline, & Nanocomosite.

Topic: Material Physics

Plain Format | Corresponding Author (Iswadi Ibrahim Patunrengi)

Share Link Copy Text

Share your abstract link to your social media or profile page