西安石油大学学报（自然科学版）2025，Vol.40Issue(3)：115-121,7.DOI:10.3969/j.issn.1673-064X.2025.03.013
十二烷基酚嵌段醚丙基磺酸钠的溶液性能
Solution Properties of Sodium Dodecylbenzene Polypropylene-Polyoxyethylene Ether Propyl Sulfonate
摘要
Abstract
To meet the requirements of salt resistance and interfacial activity of surfactants for oil displacement in medium to high min-eralized reservoirs,the physicochemical properties of three types of alkylphenol PO-EO block ether sulfonate sodium(C12PE4S,C12PE8S,and C12PE12S)were studied,and the influence of EO chain number on solubility,foaming,surface/interfacial properties,and emulsifying properties was obtained.The experimental results show that at 25℃,0.3％ aqueous solutions of C12PE4S,C12PE8S,and C12PE12S appeared turbid when the mass fraction of NaCl solution was 13％,15％,and 20％,respectively.Their solubility was better than that of conventional surfactants with corresponding hydrophobic groups,and the larger the EO number of the synthesized product,the better its solubility and salt resistance.The critical micelle concentration(cmc)of three surfactants decreases with increas-ing temperature and increases with increasing EO number,and the corresponding surface tension value(γcmc)increases.The Gibbs free energy of forming micelles decreases with increasing temperature and increases with increasing EO number.The sulfonated surfactants with larger EO units have better foaming performance.The interfacial tensions between kerosene and solution of surfactant C12PE4S,C12PE8S and C12PE12S could reach ultra-low value(10-3 mN/m order of magnitude)in salinity range of 4.0％～7.0％,6.0％～8.5％ and 10％～13％ NaCl,indicating that as the EO number increases,the salinity required to reach the lowest interfacial tension al-so increases.C12PE8S and C12PE12S form mesophase emulsion in0.1％～4.0％ and 0.3％～5.0％ NaCl solution,respectively,which indicates that the salt concentration required to form mesophase emulsion increases with the increase of EO number of surfactant.关键词
十二烷基酚聚氧丙烯-聚氧乙烯醚磺酸钠/溶解性/起泡性/表/界面性质/乳化性Key words
dodecyl phenol polypropylene-ethoxylate sulfonates/solubility/foaming performance/surface/interfacial tension/emulsification分类
能源科技引用本文复制引用
罗佳莹,罗芳草,袁浩恩,郑延成,穆健..十二烷基酚嵌段醚丙基磺酸钠的溶液性能[J].西安石油大学学报（自然科学版）,2025,40(3):115-121,7.基金项目
国家自然科学基金面上项目"碳点改性粒子协同扩展表面活性剂驱油体系构筑及机制研究"(52374030) （52374030）
长江大学大学生创新创业训练计划项目"Extended型阴-非离子表面活性剂的合成及溶液性能研究"(Yz2021076) （Yz2021076）
