{
    "content": "The synthesis of hydrophilic polymers involves monomers with functional groups such as hydroxyl (-OH) in polyvinyl alcohol (PVA) and amide (-C(=O)NH-) in polyacrylamide (PAAm), which enhance the hydrophilicity of corresponding polymers by promoting hydrogen bonding interactions with water molecules, thereby improving the solubility and water retention of the hydrogels.The monomers used for synthesizing hydrophilic polymers include polyvinyl alcohol (PVA), which contains hydroxyl functional groups, and acrylamide (AAm), which also has amide groups; these functional groups enhance the hydrophilicity of the polymers by increasing their ability to form hydrogen bonds with water molecules, thereby improving interactions with water."
}