“…Many types of surface sizing agents such as wax, alkyl ketene dimer (AKD), poly (styrene-acrylic acid) (SAA), styrene-acrylate emulsion (SAE), poly (styrene-maleic anhydride) (SMA), polyurethane (PU), etc., were used to improve the properties of paper [1][2][3][4][5][6][7][8][9][10][11][12]. Therefore, more and more attention has been paid to the synthesis of surface sizing agents with superior characteristics.…”