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<p>A synthesis, ultrasonic properties study and applications of vanillylidenacetone (VADE), <i>p</i>-cresol, and formaldehyde terpolymer have been reported. The synthesis was performed by using 6&#xa0;M HCl at 373.15–393.15&#xa0;K (100–120&#xa0;°C). The characterisation of compounds was performed by using FTIR, <sup>1</sup>H NMR spectroscopy, and the thermal stability of the terpolymer was analysed using DSC analysis. Conductometric titration was used to determine the molecular weight (number-average M ̅n) of the terpolymer. Internal properties, ultrasonic velocity, density, adiabatic compressibility, specific acoustic impedance, viscosity, intermolecular free length and relaxation time were determined by molecular interaction study in dichloromethane as a solvent. Based on the obtained result, we analysed the direction of solute-solvent interactions between the polymer, the solvent and strong hydrogen bonding ability. The polymer was used for dye extraction. Cationic dyes, including methylene blue, rhodamine B, malachite green, crystal violet, and toluidine blue, were extracted in the liquid phase with greater than 90% 0.1 to 1 gm/mL of polymer concentration. Decreased absorbance was measured by a UV-visible spectrophotometer, achieving dye extraction ability in the organic layer. Antioxidant activity of the terpolymer was studied against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. The polymer [0.3% to 1.3%] was found to have very good antioxidant activities with an IC₅₀ value of 0.62&#xa0;mg/mL.</p>

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Synthesis of p-cresol-based terpolymer: Ultrasonic investigation, antioxidant activity, and liquid phase industrial dyes extraction applications

  • 期刊论文

  • 发表日期：

    2026年4月24日

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  • Muskanbanu Mahebubkhan Baloch,
  • Pravin Narayan Bhalerao

摘要

A synthesis, ultrasonic properties study and applications of vanillylidenacetone (VADE), p-cresol, and formaldehyde terpolymer have been reported. The synthesis was performed by using 6 M HCl at 373.15–393.15 K (100–120 °C). The characterisation of compounds was performed by using FTIR, 1H NMR spectroscopy, and the thermal stability of the terpolymer was analysed using DSC analysis. Conductometric titration was used to determine the molecular weight (number-average M ̅n) of the terpolymer. Internal properties, ultrasonic velocity, density, adiabatic compressibility, specific acoustic impedance, viscosity, intermolecular free length and relaxation time were determined by molecular interaction study in dichloromethane as a solvent. Based on the obtained result, we analysed the direction of solute-solvent interactions between the polymer, the solvent and strong hydrogen bonding ability. The polymer was used for dye extraction. Cationic dyes, including methylene blue, rhodamine B, malachite green, crystal violet, and toluidine blue, were extracted in the liquid phase with greater than 90% 0.1 to 1 gm/mL of polymer concentration. Decreased absorbance was measured by a UV-visible spectrophotometer, achieving dye extraction ability in the organic layer. Antioxidant activity of the terpolymer was studied against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. The polymer [0.3% to 1.3%] was found to have very good antioxidant activities with an IC₅₀ value of 0.62 mg/mL.