{
    "content": "The monomers used for synthesizing hydrophilic polymers include vinyl monomers with N-hydroxymethyl or N-alkoxyhydroxymethyl groups as well as vinyl monomers with sulfonic groups, which enhance the hydrophilicity of the polymers through the presence of hydrophilic functional groups that interact with water via hydrogen bonding and ionic interactions.The synthesis of hydrophilic polymers involves monomers that have functional groups such as N-hydroxymethyl, N-hydroxymethyl ether, and hydroxyl, which enhance hydrophilicity by increasing interactions with water through hydrogen bonding.The hydrophilic polymers are synthesized using monomers that include vinyl monomers with N-hydroxymethyl or N-alkoxymethylol groups (monomer A1), vinyl monomers with sulfonic acid groups (monomer A2), and alkyl acrylate monomers (monomer A3), where the presence of N-hydroxymethyl or N-alkoxymethylol functional groups enhances polymer crosslinking, and sulfonic acid groups improve the hydrophilicity and heat resistance of the copolymer, facilitating interactions with water through ion-dipole and hydrogen bonding mechanisms.Monomers used in the synthesis of hydrophilic polymers include A1: vinyl monomers with N-hydroxymethyl or N-alkoxy hydroxymethyl groups, which induce crosslinking and enhance hydrophilicity; A2: vinyl monomers featuring sulfonic acid groups, which improve the polymer's hydrophilicity and suppress fogging phenomena in high humidity; and A3: alkyl ester monomers of (meth)acrylic acid, which improve adhesion and heat resistance of the film, with the sulfonic acid groups in A2 maintaining some acidity to catalyze reactions while also contributing to the overall hydrophilicity of the copolymer."
}