Modified gelatin with quaternary ammonium salts containing epoxide groups

An EPDDMAC-GE polymer (hydrophilic molecule) has been synthesized based on epoxypropyl dodecyl dimethyl ammonium chloride (EPDDMAC) and gelatin. A DEEPSAC-GE polymer (hydrophobic molecule) has been synthesized based on diethyl-2,3-epoxypropyl-[3-methyldimethoxyl] silpropyl ammonium chloride (DEEPSAC) and gelatin. Compared with initial gelatin, the gelatin modified with quaternary ammonium salts containing epoxide groups exhibits stronger antibacterial activity.