松香基双季铵盐表面活性剂的合成及性能分析
Synthesis and Analysis of Rosin-based Quaternary Ammonium Gemini Surfactant
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摘要: 以松香(酸值 170.54 mg/g)为原料,经与环氧氯丙烷反应,得到中间产物3-松香酰氧基-2-羟丙基氯,酯化率为 99.18%,中间产物与三乙烯二胺发生季铵化反应,在n(中间产物):n(三乙烯二胺)1.5:1、时间 25h、温度 80℃ 条件下制备了二氯化-N-N'-二(3-松香酰氧-2-羟丙基)-三乙烯二胺,得率为 50.71%,纯度为 95.03%。采用FT-IR对产物进行了结构确证,并对其性能进行分析。结果表明:产物乳化力较强,乳化时间为 10 min;产物的临界胶束浓度(cmc)为9.7×10-4 mol/L,表面张力(γcmc)为 43.41 mN/m;发泡能力较强,泡沫稳定性好。Abstract: The CsH2s-α,ω-bis(abietyl hydroxy propyl triethylenediamine chloride), here s=2,had been synthesized by reacting 3-abietylacyloxy-2-hydroxypropyl chloride with triethylenediamine at a yield of 50.71% and purity of 95.03%. The intermediate compound 3-abietylacyloxy-2-hydroxypropyl chloride was prepared from rosin(acid value 170.54 mg/g) reacted with epoxy chloropropane, and the esterification rate was 99.18%. The synthesis condition of the aimed compound was as follows:n(intermediate compound):n(triethylene diamines)1.5:1, reaction temperature 80℃ and reaction time 25 h. The structure of the aimed compound was characterized by FT-IR and its property was analyzed. The results showed that:emulsifying ability was up to 10 min, critical micelle concentration (cmc) was 9.7×10-4 mol/L and surface tension was 43.41 mN·m.The aimed compound maintained strong foaming ability and superior foaming stability.