合成了一系列可裂解Gem in i型季铵盐表面活性剂:烷基-α,ω-双(二甲基酰氧乙基溴化铵),标记为Ⅱ-m-n(m=12,14;n=3,4,6);采用红外光谱和核磁共振进行结构表征。测定了相关的性能,结果表明,可裂解Gem in i型季铵盐表面活性剂具有很强的胶束生成能力,其临界胶束浓度(CMC)为2.63×10-4~4.17×10-4mol/L(m=12)及2.88×10-5~4.46×10-5mol/L(m=14),分别比相应的单季铵盐表面活性剂的临界胶束浓度(CMC)低两个数量级;其泡沫稳定性、乳化性能和杀菌性明显优于相应的单季铵盐表面活性剂。 A series of cleavable Gem in i type quaternary ammonium surfactants were synthesized: alkyl-α, ω-bis (dimethyloxoylethyl ammonium bromide) labeled as Ⅱ-mn (m = 12,14; n = 3, 4, 6); Structural characterization by infrared spectroscopy and nuclear magnetic resonance. The results showed that the cleavable Gem in i quaternary ammonium surfactant had strong micelle formation ability and its critical micelle concentration (CMC) was 2.63 × 10-4 ~ 4.17 × 10-4 mol / L (m = 12) and 2.88 × 10-5 ~ 4.46 × 10-5mol / L (m = 14), respectively, two orders of magnitude lower than the critical micelle concentration (CMC) of the corresponding mono-quaternary ammonium surfactants ; Its foam stability, emulsifying properties and bactericidal properties were significantly better than the corresponding single quaternary ammonium surfactants.