{
    "content": "The synthesis of hydrophilic polymers involves monomers such as PVP (polyvinylpyrrolidone), which contains the pyrrolidone functional group that enhances hydrophilicity through strong hydrogen bonding interactions with water, and PETRA (polymer of ethylene glycol and trimethylolpropane), which consists of acrylate functional groups that, when crosslinked, also improve the interaction with water."
}