西南石油大学学报（自然科学版）2012，Vol.34Issue(2)：149-155,7.DOI:10.3863/j.issn.1674-5086.2012.02.022
高温下表面活性剂与钠离子钙离子的作用机理
Research on Static Electricity Interaction Between SDBS, NPSS-10 Surfactants and Na+, Ca2+ in High Temperature
摘要
Abstract
Interaction mechanism of SDBS surfactants and NPSS-10 surfactants with sodium ion and calcium ion is studied by potential titration method in high temperature. (1) SDBS interactes weakly with sodium ion, since ion-pair is formed by the interaction of sodium ion and anionic head groups of SDBS in micelle, which shields static electricity of anionic head groups and decrease the polar of surfactants in certain extent. (2) NPSS-10 interact more strongly with sodium ion when the concentration is over cmc, because EO groups which hydrated dehydrates in high temperature and ion-pair is formed by the interaction of sodium ion and anionic head groups of NPSS-10 in micelle, which decreases polar of the surfactant and increases anti-salinity ability. (3) SDBS has no interaction with calcium ion and does not form chemical precipitation in solution containing low concentration calcium ion, but in high concentration calcium ion solution. SDBS has strong interact with calcium ion and brings about chemical precipitation (alkylphenol sulphonate). (4) NPSS-10 has strong interaction with calcium ion and has no chemical precipitation in low concentration calcium ion solution, because a complex is formed by interaction of EO groups in NPSS-10 molecular with calcium ion. NPSS-10 has no interaction with calcium ion and has no chemical precipitation in high concentration calcium ion solution, because the polar of NPSS-10 not only decreases, but also static effects decrease interaction of sulfnonate head groups and calcium ion so ion-pair is formed difficultly, and avoids bringing about the chemical precipitation from interaction of calcium ion and sulfonate head groups. NPSS-10 has stronger ability of resist calcium ion.关键词
高温/NPSS-10/十二烷基苯磺酸钠/钠离子/钙离子/静电作用机理Key words
high temperature/ NPSS-10/ SDBS/ Na+/ Ca2+/ static electricity mechanism分类
能源科技引用本文复制引用
周明,赵金洲,贺映兰..高温下表面活性剂与钠离子钙离子的作用机理[J].西南石油大学学报（自然科学版）,2012,34(2):149-155,7.基金项目
国家自然科学基金(NO.51074133) （NO.51074133）
中国博士后科学基金(20090450173). （20090450173）
