文摘
A series of cationic surfactants, di-chain esterquat surfactants (EQs), were synthesized from N-methyl diethanolamine, hydrochloric acid, ethylene oxide, and caprylic acid, decylic acid, or lauric acid by a three-step process. The synthesized surfactants were characterized by IR, MS, and 1HNMR. Surface properties, antibacterial activity, and biodegradability of the synthesized surfactants were investigated. The results showed that synthesized EQs exhibit high surface activities and good biodegradability. Further, the synthesized surfactant, N,N-di-[O-decanoyl-2-hydroxyethyl]-N-hydroxyethyl-N-methylammonium chloride, exhibits excellent antibacterial activity against E. coli and S. aureus.