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. 2017 May 18;10(5):540. doi: 10.3390/ma10050540

Table 1.

The materials used for hydrogel preparation.

Materials	Chemical Characteristics	Chemical Structure
Acrylamide, AMD	molecular weight: 72.06 g/mol; density 1.051 g/cm³; solubility in water: 2.04 kg·L⁻¹ at 25 °C
Acrylic acid, AA	molecular weight: 71.08 g/mol; density 1.13 g/cm³; soluble in water;
Potassium persulfate, PP (used as initiator)	molecular weight: 270.322 g/mol; density 2.477 g/cm³; solubility in water: 1.75 g/100 mL at 0 °C;	K₂S₂O₈
Trimethylolpropane trimethacrylate, TMPT (used as cross-linker)	molecular weight: 338.4 g/mol; boiling point: >200 °C; density 1.06 g/cm³; 75 ± 3% active ingredient;