温度响应型蠕虫胶束体系抗盐性能研究

Salt Resistance Properties of Temperature-responsive Wormlike Micelle System

陈维玉 刘巍洋 曲广淼 丁伟

CHENWeiyu，LIUWeiyang，QU Guangmiao，DINGWei

为提高温度响应型蠕虫胶束的抗盐性，采用阴离子表面活性剂十八烷基苯磺酸钠（SOBS）和两性离子表面活性剂十八烷基羟基磺基甜菜碱（ODAHPS）制得蠕虫胶束体系，研究了温度对胶束黏度的影响，考察了胶束的抗盐和抗碱性能。研究结果表明，当ODAHPS和SOBS的摩尔比为7 时，胶束的响应温度为50℃；胶束黏度随着 温度升高呈现先增加后降低的趋势；达到响应温度后，胶束黏度随表面活性剂总浓度的增加而增大；随角频率的增加，胶束溶液逐渐由黏性流体向弹性流体转变；胶束黏度随无机盐浓度的增加先增大后降低；胶束耐碱性能良好，当弱碱和强碱质量浓度分别为2.5 g/L 和12 g/L 时，胶束黏度分别为133 和196 mPa·s，可以作为驱油剂使用。图9 表1 参24

In order to improve the salt resistance of temperature-responsive wormlike micelle system，a wormlike micelle system was prepared using anionic surfactant sodium octadecyl benzene sulfonate（SOBS）and amphoteric surfactant octadecyl hydroxy sulfobetaine（ODAHPS）. The effect of temperature on the viscosity of micelle was studied，and the salt resistance and alkali tolerance of micelle were investigated. The results showed that when the molar ratio of ODAHPS and SOBS was 7，the responsive temperature of micelle was 50℃. The viscosity of micelle increased first and then decreased with increasing temperature. After the responsive temperature was reached，the viscosity of micelle increased with the increase of surfactant concentration. The micellar solution gradually transformed from viscous fluid to elastic fluid with the increase of angular frequency. The viscosity of micelle increased first and then decreased with increasing salt concentration. The micelle system had excellent alkali-tolerance capacity. When the mass concentration of weak base and strong base was 2.5 and 12 g/L，the viscosity of micelle was 133 and 196 mPa·s respectively. This temperature-responsive wormlike micelle system could be used as oil displacement agent.

10.19346./j.cnki.1000-4092.2017.01.027