十二氟庚醇琥珀酸酯磺酸盐的合成及性能

Synthesis and Properties of Dodecafluoroheptanol Sodium Sulfosuccinate

以十二氟庚醇、顺丁烯二酸酐、无水亚硫酸钠为原料,经酯化、磺化反应制备了一种阴离子表面活性剂——十二氟庚醇琥珀酸酯磺酸盐,考察了酯化、磺化的反应条件。酯化反应的最佳条件为:n(十二氟庚醇)∶n(顺丁烯二酸酐)=1∶1.2,n(催化剂)∶n(十二氟庚醇)=6∶100,反应时间4 h,反应温度85℃,酯化率为98.45%;磺化反应的最佳条件为:n(马来酸单酯)∶n(亚硫酸钠)=1∶1.2,反应时间1.5 h,反应温度75℃,磺化率为98.52%。对产物的性能进行测定,其临界胶团浓度是2.65×10-3mol/L,表面张力是22.19 mN/m。该工作的新颖性,已为2008年8月27日由四川理工学院图书馆出具的第2008001号《科技查新》报告所证实。

A type of anionic surfactant--dodecafluoroheptanol sodium sulfosuccinate was prepared with dodecafluoroheptanol, maleic anhydride and anhydrous sodium sulfite as starting materials by means of esterification and sulphonation. The optimum reaction conditions of esterification were n （dodecafluoroheptanol） ：n （ maleic anhydride ） = 1 ： 1.2, n （catalyst） ：n （dodecafluoroheptanol） = 6：100, reaction time 4 h and reaction temperature 85 ℃. Esterification ratio of the product was 98.45%. The optimum reaction conditions of sulphonation were n （maleic monoester）：n（ anhydrous sodium sulfite） = 1：1.2, reaction time 1.5 h and reaction temperature 75 ℃. Sulphonation ratio of the product was 98.52%. Its surface properties were investigated： CMC = 2. 65 × 10^-3 mol/L, YCMC = 22. 19 mN/m. This work has not been previously reported in literature.