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<p>Traditional waterborne acrylic latex formulations commonly rely on substantial quantities of hydrophilic monomers and additives during synthesis, which often result in coatings exhibiting high surface hydrophilicity. This inherent hydrophilicity adversely affects key performance attributes such as antifouling and corrosion resistance in the cured films. To address these limitations, an organosilicone-modified acrylic latex was successfully synthesized via in-situ emulsion polymerization. A key innovation of this work involves the development of a effective strategy to overcome interfacial compatibility issues between polymer phases with significantly different polarities. This was achieved through the establishment of chemical bonds between the organosilicone and acrylic resins, allowing their encapsulation by surfactant micelles and enabling homogeneous dispersion within the aqueous phase. Structural and morphological analyses including Fourier transform infrared spectroscopy, dynamic light scattering for particle size and zeta potential measurements, and transmission electron microscopy—confirmed that the hybrid latex particles adopted a core–shell-like architecture encapsulated by surfactant micelles, thereby promoting colloidal stability in water. During film formation, water evaporation induced capillary forces that drove particle approximation, deformation, and coalescence, ultimately leading to emulsion destabilization. The hybrid latex exhibited self-stratification behavior attributable to differences in polarity and density between the constituent polymers, as evidenced by field-emission scanning electron microscopy (FE-SEM). This resulted in the migration of organosilicone components toward the coating–air interface, imparting the final films with enhanced heat resistance, antifouling characteristics, surface hydrophobicity, and improved corrosion resistance.These findings underscore the effectiveness of the in-situ modification approach in improving the functional properties of waterborne acrylic coatings via controlled phase separation and surface enrichment with organosilicone constituents.</p>

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Silicone-modified acrylic hybrid latex: film formation and performance

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Ruofei Liu,
  • Xiao Wang,
  • Xinyu Wang,
  • Xin Sun,
  • Kai Yang,
  • Lizhuang Chen,
  • Benqing Li,
  • Zhengbai Zhao,
  • Lixin Xu,
  • Weili Li

摘要

Traditional waterborne acrylic latex formulations commonly rely on substantial quantities of hydrophilic monomers and additives during synthesis, which often result in coatings exhibiting high surface hydrophilicity. This inherent hydrophilicity adversely affects key performance attributes such as antifouling and corrosion resistance in the cured films. To address these limitations, an organosilicone-modified acrylic latex was successfully synthesized via in-situ emulsion polymerization. A key innovation of this work involves the development of a effective strategy to overcome interfacial compatibility issues between polymer phases with significantly different polarities. This was achieved through the establishment of chemical bonds between the organosilicone and acrylic resins, allowing their encapsulation by surfactant micelles and enabling homogeneous dispersion within the aqueous phase. Structural and morphological analyses including Fourier transform infrared spectroscopy, dynamic light scattering for particle size and zeta potential measurements, and transmission electron microscopy—confirmed that the hybrid latex particles adopted a core–shell-like architecture encapsulated by surfactant micelles, thereby promoting colloidal stability in water. During film formation, water evaporation induced capillary forces that drove particle approximation, deformation, and coalescence, ultimately leading to emulsion destabilization. The hybrid latex exhibited self-stratification behavior attributable to differences in polarity and density between the constituent polymers, as evidenced by field-emission scanning electron microscopy (FE-SEM). This resulted in the migration of organosilicone components toward the coating–air interface, imparting the final films with enhanced heat resistance, antifouling characteristics, surface hydrophobicity, and improved corrosion resistance.These findings underscore the effectiveness of the in-situ modification approach in improving the functional properties of waterborne acrylic coatings via controlled phase separation and surface enrichment with organosilicone constituents.