利用三乙胺盐酸盐分别与双酚A型环氧树脂(E-44、E-51和E-54)和酚醛环氧树脂(F-51)发生反应,制备出4种不同的环氧树脂季铵盐.经测定环氧树脂的环氧值、环氧树脂季铵盐中的季铵盐离子,以及对三乙胺盐酸盐和环氧树脂季铵盐进行红外分析后发现,双酚A型环氧树脂的环氧基易于开启,而F-51的环氧基则具有较高的开启难度.经抑菌圈实验发现,F-51季铵盐表现出较强的杀菌效果.当F-51季铵盐浓度为0.5 mol/L时,其所形成的抑菌圈直径达到 2.40 cm.
Development and application research of novel quaternary ammonium salts as antimicrobial agents
This study detailed the synthesis of four distinct epoxy resin quaternary ammonium salts(QAS)through the reaction of triethylamine hydrochloride with bisphenol A type epoxy resins(E-44,E-51,and E-54)and phenolic epoxy resin(F-51).Up-on analysis of the epoxy value of the epoxy resins,the QAS ions present in the epoxy resin QAS,and the infrared spectroscopy of triethylamine hydrochloride and epoxy resin QAS,it was observed that the epoxy groups of bisphenol A type epoxy resins were susceptible to nucleophilic attack,whereas the epoxy groups of F-51 demonstrated greater resistance to nucleophilic opening.The inhibition zone test revealed that F-51 QAS exhibited strong bactericidal effects.When the concentration of F-51 QAS was 0.5 mol/L,the diameter of the inhibition zone reached 2.40 cm.
triethylamine hydrochlorideepoxy resinquaternary ammonium saltantibacterial agentproperty research
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