癸基萘磺酸盐表面活性剂的组成-界面张力关系  

Relationship Between O/W Interfacial Tension and Composition of Decyl Naphthalene Sulfonate Surfactant

作　　者：张明[1] 何志强[1] 方云[1] 王金龙[1] 

机构地区：[1]江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《精细化工》2013年第5期485-489,517,共6页Fine Chemicals

基　　金："十一五"国家科技支撑计划项目(2007BAE52B01);江苏省精细石油化工重点实验室开放基金项目(KF0903);江南大学博士研究生科学研究基金(JUDCF09007)~~

摘　　要：该文采用廉价易得的萘和α-癸烯为原料,以氯铝酸离子液体催化Friedel-Crafts烷基化反应,合成了中间体癸基萘(DN),再经磺化与中和反应合成了结构明确、组成可调的驱油用阴离子型表面活性剂复合癸基萘磺酸钠(DNS)。中间体DN通过FTIR和1HNMR进行结构表征,产品DNS采用HPLC-MS分析组成,并测得其克拉夫特点小于0℃。测定了DNS对正构烷烃模拟油相的界面性能,结果表明,DNS1-1和DNS3均可在较低表面活性剂质量分数(0.25%～0.4%)下将油水界面张力降低至10-3mN/m数量级,并且具有良好的耐盐性,不同批次DNS1-1产品均能维持组成基本不变并稳定地重现组成相关的超低界面张力。The intermediate decyl naphthalene （DN） was synthesized by Lewis acidic ionic liquid catalyzed Friedel-Crafts alkylation reaction from naphthalene and ct-decene, and the structure of DN was identified by FTIR and 1HNMR. Then, decyl naphthalene sulfonates （DNS） , the anionic flooding surfactants with identified structure,tunable composition and Krafft point below 0 ~C, were synthesized from DN by sulfonation and neutralization, and the composition of DNS was determined by HPLC-MS. The interracial tensions of aqueous DNS solutions against normal paraffin simulated oil phases were measured. The experimental results show that products DNS1 - 1 and DNS3 could decrease the O/W interfacial tensions to 10 -3 mN/m within the lower surfactant mass fractions of 0.25% ~ 0.4% and exhibited good salt tolerance simultaneously. It was noted that the composition stability and the phenomena of composition-dependent ultralow interracial tensions were reproducible for different batches of DNS1 - 1.

关 键 词：癸基萘磺酸盐 表面活性剂 界面张力 耐盐性 三次采油 

分 类 号：TQ423.11[化学工程]