无机盐含量及温度对微乳液体系相行为的影响  

Influence ofinorganic salt content and temperature on phase behavior of microemulsion system

作　　者：陈爽[1] 刘士伟 顾学林 王娩 刘会娥[1] CHEN Shuang;LIU Shi-wei;GU Xue-lin;WANG Mian;LIU Hui-e(College of Chemical Engineering,China University of Petroleum(East China),Qingdao 26658,China;Water Supply Branch ofShengli Petroleum Administration Co.,Ltd.,Dongying 257097,China)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]胜利石油管理局有限公司供水分公司,山东东营257097

出　　处：《化学研究与应用》2022年第6期1284-1293,共10页Chemical Research and Application

基　　金：国家自然科学基金(22078366)资助;山东省自然科学基金(ZR2017MB015)资助。

摘　　要：以脂肪醇聚氧乙烯醚(AEO-9)为表面活性剂,正丁醇、异丁醇及仲丁醇为助表面活性剂,正辛烷和柴油为油相,NaCl为无机盐,探究无机盐含量及温度对非离子型微乳液体系相行为的影响。结果表明,在正辛烷和柴油微乳液体系的盐度扫描实验中,各体系均发生WinsorⅠ→WinsorⅢ→WinsorⅡ型的变化,但柴油体系较正辛烷体系对无机盐的敏感性弱。随着AEO-9含量增加,中相微乳液体积增大,S_(1)(WinsorⅢ微乳液开始形成时需要的无机盐含量)增大,ΔS(维持WinsorⅢ微乳液所需的盐度范围)减小。在正辛烷和柴油微乳液体系的温度扫描实验中,其相行为及表面活性剂对中相微乳液增溶能力的影响与盐度扫描实验一致,且随表面活性剂含量增加,T_(1)(WinsorⅠ型向WinsorⅢ型转变时所对应的温度)增大,ΔT(维持WinsorⅢ型微乳液所需要的温度范围)减小。Use fatty alcohol polyoxyethylene ether(AEO-9)as surfactant,n-butanol,isobutanol and sec-butanol as co-surfactants,n-octane and diesel oil as oil phase,NaCl as inorganic salt,explore inorganic the influence of salt content and temperature on the phase behavior of non-ionic microemulsion system.The results show that in the salinity scanning experiment of the n-octane and diesel microemulsion systems,the changes of WinsorⅠ→WinsorⅢ→WinsorⅡoccurred in each system,but the diesel system is less sensitive to inorganic salts than the n-octane system.As the content of AEO-9 increases,the volume of the middle phase microemulsion increases,S_(1)(the content of inorganic salts required when WinsorⅢmicroemulsion begins to form)increases,andΔS(the salinity range required to maintain WinsorⅢmicroemulsion)decreases.In the temperature scanning experiment of n-octane and diesel microemulsion systems,the phase behavior and the effect of surfactants on the solubilization ability of the middle phase microemulsion are consistent with the salinity scanning experiment,and with the increase of surfactant content,T_(1)(Winsor The temperature corresponding to the transition from typeⅠto WinsorⅢtype)increases,andΔT(the temperature range required to maintain WinsorⅢtype microemulsion)decreases.

关 键 词：微乳液 表面活性剂 无机盐 助表面活性剂 温度 相变 

分 类 号：O648.23[理学—物理化学]