{
    "content": "The monomers used for synthesizing hydrophilic polymers include poly(ethylene glycol) diacrylate (PEGDA), gelatin methacryloyl (GelMA), and methacrylated hyaluronic acid (MeHA), which contain functional groups such as acrylates and methacrylates that enhance hydrophilicity by promoting strong hydrogen bonding and electrostatic interactions with water molecules.The hydrophilic polymer PEGDA is synthesized from PEG, which contains terminal hydroxyl groups that enhance its hydrophilicity, as these hydroxyl groups facilitate hydrogen bonding with water molecules, thus increasing the polymer's interaction with water.The monomers used for synthesizing hydrophilic polymers such as PEGDA include PEG diol featuring hydroxyl (-OH) functional groups and acryloyl chloride, which enhance the hydrophilicity of the resulting polymers by promoting hydrogen bonding and dipole interactions with water molecules.The monomer used for synthesizing hydrophilic polymers in the GelMA hydrogel is gelatin, which enhances hydrophilicity through its RGD sequences, while the methacrylic anhydride functional group introduced during methacrylation improves the degradation rate and mechanical strength of the resulting polymer, thus facilitating water interactions.The synthesis of GelMA involves methacryloyl groups substituted onto the hydroxyl and amine functional groups of gelatin, which enhance hydrophilicity; these groups provide sites for hydrogen bonding with water molecules, increasing the polymer's interaction with water.The monomer used for synthesizing hydrophilic polymers in this context is hyaluronic acid (HA), which contains functional groups such as the N-acetyl group and carboxyl groups that enhance hydrophilicity by promoting hydrogen bonding and electrostatic interactions with water.The synthesis of MeHA involves methacryloyl groups substitution on the hydroxyl and reactive amine groups of HA, which enhance the hydrophilicity of the corresponding polymers due to the presence of polar functional groups that interact favorably with water through hydrogen bonding.The monomers used for synthesizing hydrophilic polymers, including poly(ethylene glycol) diacrylate (PEGDA), gelatin methacryloyl (GelMA), and methacrylated hyaluronic acid (MeHA), contain functional groups that enhance hydrophilicity, which enables improved interactions with water through hydrogen bonding and other polar interactions due to the presence of hydroxyl and carboxyl groups in their structures."
}