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Hydrophobic modification of cellulose nanocrystals (CNCs) was performed using 2-octenylsuccinic anhydride (OSA) to improve their dispersibility in non-aqueous media. The modified CNCs (MCNCs) were characterized using FTIR, XRD, zeta potential, and TEM analyses. Pickering emulsions stabilized by varying concentrations of MCNCs were prepared and characterized for droplet size, emulsification index, and stability. The catalytic activity of lipase in MCNC-stabilized Pickering emulsions was evaluated and compared to emulsifier-free and Tween 60-stabilized emulsions. Results showed that OSA modification enhanced the solution stability and hydrophobicity of CNCs, and the Pickering emulsions stabilized with 1.5% MCNCs exhibited optimal stability and lipase catalytic activity.

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Modified Cellulose Nanocrystals and Their Application in Pickering Emulsion

  • 会议论文

  • 发表日期：

    2025年

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  • Lu-Jing Gan,
  • Mingyun Liu,
  • Ziwei Ye,
  • Jingmei Lyu

摘要

Hydrophobic modification of cellulose nanocrystals (CNCs) was performed using 2-octenylsuccinic anhydride (OSA) to improve their dispersibility in non-aqueous media. The modified CNCs (MCNCs) were characterized using FTIR, XRD, zeta potential, and TEM analyses. Pickering emulsions stabilized by varying concentrations of MCNCs were prepared and characterized for droplet size, emulsification index, and stability. The catalytic activity of lipase in MCNC-stabilized Pickering emulsions was evaluated and compared to emulsifier-free and Tween 60-stabilized emulsions. Results showed that OSA modification enhanced the solution stability and hydrophobicity of CNCs, and the Pickering emulsions stabilized with 1.5% MCNCs exhibited optimal stability and lipase catalytic activity.