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<p>Natural fiber (NF) products provide ecofriendly and low-cost solutions for sustainable product development for energy storage applications. However, imparting electrical conductivity to NF is a challenging task due to its intrinsic non-conductivity properties and hydrophilic nature. The present work aims to develop an electrically conductive, functionally graded woven pineapple fiber (FGPAF) through functionalization of rGO/CB on the fiber surface. The FGPAF surface was further modified with PPy to create a functionally graded woven pineapple composite (FGPAC) with improved electrical conductivity compared to FGPAF by altering the Wt.%. The electrical property of FGPAC was optimized by varying the Wt. % PPy and at a constant Wt.% rGO/CB. FE-SEM, FT-IR, and XRD were used to study the influence of rGO/CB and PPy functionalization on the microstructure, functional groups, and crystallographic structures of the nanoparticles. The four-point probe technique was used to measure the electrical conductivity of FGPAF/FGPAC in both the warp and weft directions. The experimental results showed that the functionalization of 10 Wt.% of rGO in 2.5 Wt.% of CB (FGPAF2) resulted in higher average electrical conductivity of 18.15 S/cm and 18.90 S/cm in the warp and weft directions, respectively. Furthermore, the functionalization of 5 Wt.% PPy (FGPAC5) exhibited the highest average electrical conductivity of 35.91 S/cm in warp and 36.04 S/cm in weft directions. The electrical conductivity of FGPAC5 was also examined under high thermal loading conditions, and the results indicated an increase in conductivity to a promising range of 120% at 100&#xa0;℃. Similar electrical conductivity across the entire fiber surface suggests that PA fibers are a potential candidate for the development of electrode materials.</p>

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Electrical conductivity performance of functionally graded pineapple fiber polypyrrole composite at warp and weft directions under thermal loading

  • 期刊论文

  • 发表日期：

    2025年7月25日

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  • Prabu Krishnasamy,
  • Ramesh Natesan,
  • Ahmed Belaadi,
  • G. Rajamurugan,
  • Deepa Akepati,
  • Kasturi Bhattacharya

摘要

Natural fiber (NF) products provide ecofriendly and low-cost solutions for sustainable product development for energy storage applications. However, imparting electrical conductivity to NF is a challenging task due to its intrinsic non-conductivity properties and hydrophilic nature. The present work aims to develop an electrically conductive, functionally graded woven pineapple fiber (FGPAF) through functionalization of rGO/CB on the fiber surface. The FGPAF surface was further modified with PPy to create a functionally graded woven pineapple composite (FGPAC) with improved electrical conductivity compared to FGPAF by altering the Wt.%. The electrical property of FGPAC was optimized by varying the Wt. % PPy and at a constant Wt.% rGO/CB. FE-SEM, FT-IR, and XRD were used to study the influence of rGO/CB and PPy functionalization on the microstructure, functional groups, and crystallographic structures of the nanoparticles. The four-point probe technique was used to measure the electrical conductivity of FGPAF/FGPAC in both the warp and weft directions. The experimental results showed that the functionalization of 10 Wt.% of rGO in 2.5 Wt.% of CB (FGPAF2) resulted in higher average electrical conductivity of 18.15 S/cm and 18.90 S/cm in the warp and weft directions, respectively. Furthermore, the functionalization of 5 Wt.% PPy (FGPAC5) exhibited the highest average electrical conductivity of 35.91 S/cm in warp and 36.04 S/cm in weft directions. The electrical conductivity of FGPAC5 was also examined under high thermal loading conditions, and the results indicated an increase in conductivity to a promising range of 120% at 100 ℃. Similar electrical conductivity across the entire fiber surface suggests that PA fibers are a potential candidate for the development of electrode materials.