{
    "content": "The copolymer (A) is composed of monomers (A-1), (A-2), and (A-3), where (A-1) enhances hydrophilicity through hydroxyl (OH) functional groups, as the NCO/OH ratio in the multifunctional isocyanate compound (B) is maintained between 0.1 and 1.5, and these hydroxyl groups interact with water via hydrogen bonding.The monomer structures used for synthesizing hydrophilic polymers include a water-soluble vinyl-type monomer (monomer A) and a vinyl-type monomer with hydroxyl groups (monomer C), where the hydroxyl groups enhance hydrophilicity by promoting hydrogen bonding with water, thereby increasing water interactions.Monomer structures used for synthesizing hydrophilic polymers include N,N-dimethylacryl amide (A-1), butyl acrylate (A-2), and 2-hydroxyethyl acrylate (A-3), with functional groups such as hydroxyl groups (-OH) from A-3 enhancing hydrophilicity by allowing stronger hydrogen bonding with water molecules, thereby increasing interaction and affinity for water."
}