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This study investigates the fabrication of nanocellulose (NC) and nanocellulose/graphene oxide (NC/GO) thin films on flexible polyethylene terephthalate (PET) substrates using the drop-casting method. It examines the impact of single and multiple drop-casting techniques on film quality and morphology. Results indicate that multiple drop-casting effectively mitigated the coffee-ring effect, resulting in more uniform and homogeneous films. The incorporation of graphene oxide into the nanocellulose matrix significantly enhanced the porosity of the films. Contact angle measurements revealed that NC and NC/GO films exhibited significantly lower water contact angles than bare PET, indicating improved hydrophilicity. These findings suggest that the developed NC and NC/GO films on flexible PET substrates have potential applications in various fields, including flexible electronics, sensors, and filtration.

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Morphology and Wettability of Flexible Nanocellulose and Nanocellulose-graphene Oxide Film

  • 会议论文

  • 发表日期：

    2026年

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  • Abreeza Manap,
  • Savisha Mahalingam,
  • Zaimah Hasan,
  • Dita Floresyona

摘要

This study investigates the fabrication of nanocellulose (NC) and nanocellulose/graphene oxide (NC/GO) thin films on flexible polyethylene terephthalate (PET) substrates using the drop-casting method. It examines the impact of single and multiple drop-casting techniques on film quality and morphology. Results indicate that multiple drop-casting effectively mitigated the coffee-ring effect, resulting in more uniform and homogeneous films. The incorporation of graphene oxide into the nanocellulose matrix significantly enhanced the porosity of the films. Contact angle measurements revealed that NC and NC/GO films exhibited significantly lower water contact angles than bare PET, indicating improved hydrophilicity. These findings suggest that the developed NC and NC/GO films on flexible PET substrates have potential applications in various fields, including flexible electronics, sensors, and filtration.