石油化工2018，Vol.47Issue(3)：265-270,6.DOI:10.3969/j.issn.1000-8144.2018.03.010
异辛基阴离子型Extended表面活性剂的合成及性能
Synthesis and properties of isooctyl anionic extended surfactant
摘要
Abstract
Two kinds of surfactants,sodium isooctyl poly(ethylene oxide) ether poly(propylene oxide) ether sulfate(i-OEPS) and sodium isooctyl poly(propylene oxide) ether poly(ethylene oxide) ether sulfate(i-OPES),were synthesized through such steps as alkoxylation,sulfation of SO3 vapor and neutralization of sodium hydroxide in the case that isooctanol was utilized as an initiator. Furthermore,their physical and chemical properties were characterized by static surface tension, contact angle,and salt tolerance. The product structures were characterized by FTIR and 1H NMR. Characterization results showed that hydroxyl had been substantially replaced by sulfate, successfully obtaining the desired product. The experimental results showed that with isooctyl as the hydrophobic chain,the embedding of oxypropylene group could significantly reduce the critical micelle concentration of surfactants. i-OEPS could diffuse to gas-liquid and gas-solid interfaces more easily than i-OPES,thus rapidly decreasing surface tension. At 25 ℃,150 mmol/L of i-OEPS and i-OPES droplets were able to spread rapidly on the parafilm and the equilibrium contact angle decreased to 58° and 62° in 5 s,respectively. The tolerance of 1.0%(w) i-OEPS and i-OPES aqueous solutions to NaCl,CaCl2and MgCl2were 157.2,213.9,275.0 g/L and 168.3,226.8,205.6 g/L.关键词
异辛基/Extended表面活性剂/表面张力/平衡接触角/耐盐性Key words
iosoctyl/extended surfactant/surface tension/equilibrium contact angle/salt tolerance分类
化学化工引用本文复制引用
耿卫东,李建波,杨效益,郭朝华,李萍,李全红..异辛基阴离子型Extended表面活性剂的合成及性能[J].石油化工,2018,47(3):265-270,6.基金项目
山西省青年基金项目(2015021052) （2015021052）
伽蓝研究基金资助项目(Jala 2016). （Jala 2016）
