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<p>As a promising semi-solid fat substitute, the molecular interactions in composite oleogels still lack sufficient understanding, which limits their customized design in targeted applications. This study investigates the synergistic interactions between ethylcellulose and glyceryl monostearate. In EC–GMS composites (EC 18–22 cP, EC:GMS = 9:3), hardness and oil-holding capacity reached 152.61 N and 99.44%, respectively, exceeding either single-component gel. Fourier-transform infrared (FTIR) identified Van der Waals forces as the dominant force stabilizing the hybrid matrix. Additionally, X-ray diffraction (XRD) and differential scanning calorimetry (DSC) confirmed the formation of β-form thermally stable structures at 4.47–4.41&#xa0;Å (The d-spacing of wide angle XRD peaks). The disc-like crystal morphology is formed in the composite oleogels, which is due to the limiting effect of the EC network on the nucleation and crystallization process of GMS (e.g., Avrami n ~ 2 suggests 2D growth; SAXS low-q peak indicates lamellar spacing; PLM shows spherulite-to-plate morphologies). This work provides evidence of anisotropic crystal evolution, and hierarchical structuring within EC-GMS oleogles. It advances the rational engineering of multifunctional oleogels and offers a framework for exploring crystal dynamics in polymer-lipid systems.</p>

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Synergistic interactions of ethyl cellulose and glycerol monostearate in composite oleogel systems

  • 期刊论文

  • 发表日期：

    2025年12月15日

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  • Guanyu Wang,
  • Haibo Zhao,
  • Haiteng Tao,
  • Xuemin Kang,
  • Bin Yu,
  • Bo Cui

摘要

As a promising semi-solid fat substitute, the molecular interactions in composite oleogels still lack sufficient understanding, which limits their customized design in targeted applications. This study investigates the synergistic interactions between ethylcellulose and glyceryl monostearate. In EC–GMS composites (EC 18–22 cP, EC:GMS = 9:3), hardness and oil-holding capacity reached 152.61 N and 99.44%, respectively, exceeding either single-component gel. Fourier-transform infrared (FTIR) identified Van der Waals forces as the dominant force stabilizing the hybrid matrix. Additionally, X-ray diffraction (XRD) and differential scanning calorimetry (DSC) confirmed the formation of β-form thermally stable structures at 4.47–4.41 Å (The d-spacing of wide angle XRD peaks). The disc-like crystal morphology is formed in the composite oleogels, which is due to the limiting effect of the EC network on the nucleation and crystallization process of GMS (e.g., Avrami n ~ 2 suggests 2D growth; SAXS low-q peak indicates lamellar spacing; PLM shows spherulite-to-plate morphologies). This work provides evidence of anisotropic crystal evolution, and hierarchical structuring within EC-GMS oleogles. It advances the rational engineering of multifunctional oleogels and offers a framework for exploring crystal dynamics in polymer-lipid systems.