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<p>Our study’s primary objective is the reuse of sugarcane bagasse (SC) to produce cellulose acetate (CA), a polymer with electrical properties. An innovative small molecule modification strategy was used to improve the dielectric constants and breakdown strengths of CA, CEC/CA, and CEC polymer films. This polymer has a drawback in that its mechanical properties are weak. Therefore, we combined CEC with cellulose acetate (CA) to improve its mechanical strength. FT-IR and SEM analyses confirm the presence of both polymers in the film and suggest potential interactions between them that could impact conductivity. Furthermore, SEM indicates an increase in porosity within the blend, while mechanical properties such as tensile strength (TS) and Young’s modulus (YM) show improvement. This implies that the material holds potential for numerous applications. Various frequency-dependent electrical properties were analyzed, including complex permittivity, tangent loss, impedance, and conductivity, all of which can be utilized to uncover both dipolar relaxation and charge transport. It is revealed that CA film has significantly higher conductivity values compared to CEC and CEC/CA films. Furthermore, this modification allowed a controlled range of dielectric constants for CA, CEC/CA, and CEC at 1&#xa0;kHz, which are 133, 0.70, and 8.99, respectively, as well as dielectric loss of 0.25, 1.1, and 5.2. It seems that CEC and CA films are more suitable for solar cells, optoelectronics, and thermoelectric applications because it has a higher dielectric loss (ε’′) value, a higher tangent loss and higher conductivity than the CEC/CA film.</p>

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The Dielectric Properties of Conducting Films Derived from Sugarcane Bagasse: Implications for Cyanoethyl Cellulose/cellulose Acetate Synthesis

  • 期刊论文

  • 发表日期：

    2025年7月10日

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  • Walid Sharmoukh,
  • Hebat-Allah S. Tohamy

摘要

Our study’s primary objective is the reuse of sugarcane bagasse (SC) to produce cellulose acetate (CA), a polymer with electrical properties. An innovative small molecule modification strategy was used to improve the dielectric constants and breakdown strengths of CA, CEC/CA, and CEC polymer films. This polymer has a drawback in that its mechanical properties are weak. Therefore, we combined CEC with cellulose acetate (CA) to improve its mechanical strength. FT-IR and SEM analyses confirm the presence of both polymers in the film and suggest potential interactions between them that could impact conductivity. Furthermore, SEM indicates an increase in porosity within the blend, while mechanical properties such as tensile strength (TS) and Young’s modulus (YM) show improvement. This implies that the material holds potential for numerous applications. Various frequency-dependent electrical properties were analyzed, including complex permittivity, tangent loss, impedance, and conductivity, all of which can be utilized to uncover both dipolar relaxation and charge transport. It is revealed that CA film has significantly higher conductivity values compared to CEC and CEC/CA films. Furthermore, this modification allowed a controlled range of dielectric constants for CA, CEC/CA, and CEC at 1 kHz, which are 133, 0.70, and 8.99, respectively, as well as dielectric loss of 0.25, 1.1, and 5.2. It seems that CEC and CA films are more suitable for solar cells, optoelectronics, and thermoelectric applications because it has a higher dielectric loss (ε’′) value, a higher tangent loss and higher conductivity than the CEC/CA film.