{
    "content": "Methacrylic anhydride and acryloyl chloride are used to introduce functional groups that enhance the hydrophilicity of polymers like gelatin methacryloyl, hyaluronic acid methacryloyl, and chitosan methacryloyl, which possess unsaturated double bonds that facilitate interactions with water through hydrogen bonding and dipole-dipole interactions.The text excerpt discusses monomers involved in the synthesis of hydrophilic polymers, specifically mentioning amino groups (-NH2) which enhance the hydrophilicity of the corresponding polymers by increasing the interaction with water due to their ability to form hydrogen bonds."
}