{
    "content": "The monomers used for synthesizing hydrophilic polymers include alginate, carrageenans (λ, κ, and ι), chitosan, chondroitin sulfate, dextran, fucoidan, heparin, and poly(styrene sulfonate), which contain functional groups such as carboxyl, sulfate, and sulfonate groups that enhance hydrophilicity by increasing interactions with water through hydrogen bonding and ionic interactions."
}