{
    "protocol": "1. Prepare a solution of PVP at a concentration of 0.053 g/ml using a mixture of 1-propanol, water, and 30% H2O2 in volume ratios of 0.931:0.029:0.040. 2. Develop PETRA/1-Propanol solutions and add to the PVP solution in a volume of 2 ml, adjusting according to the desired mass ratio of PETRA/PVP. 3. Dispense 5 ml of the final PVP-based solution into a silicone mold (76.2 x 50.8 x 1.2 mm) and allow to dry for 2 days. 4. Cure the dried film and mold under UVC for 30 minutes. 5. Cut the cured polymer sheet to approximately 7.5-8 mm widths and lengths of approximately 76 mm. 6. Sandwich the cut samples between two glass plates and allow to dry uniformly for more than 10 hours in an environment with relative humidity less than 20%.Hansen solubility parameters were measured by dissolving a small amount (3-5 drops) of surfactant into 10 ml of solvent. The solvents consisted of DI water, Methanol, Ethanol, 1-Propanol, 2-Propanol, Dimethyl Formamide, 1-Hexanol, Dimethyl Sulfoxide, Ethyl Acetate, Toluene, Benzene, Cyclohexane, Decane, Pentane, n-Heptane, O-Xylene, Perfluorohexane, Formamide, Acetonitrile, Acetic Acid, Propylene Carbonate, Methyl Acetate, Chloroform, and 30% Hydrogen Peroxide. Once added to the solvent, the solutions were mixed briefly in a vortexer. The solutions were visually inspected to determine their solubility within each solvent and noted. The data was plugged into the HSPiP version 5.3.09 and Hansen solubility parameters and sphere radii were generated."
}