烷基芳基磺酸盐结构与性能关系——分子结构变化对c_(CMC)和HLB值的影响  

Structure and Performance of Alkyl m-Xylene Sulfonate——Effect of Structural Modification on c_(CMC) and HLB Value

作　　者：栾和鑫[1,2] 吴运强 王宁 陈权生 张海玲 赵文强 孙记夫 吴文祥[2] 曲广淼[2] 丁伟[2] 

机构地区：[1]新疆油田公司实验检测研究院,新疆克拉玛依834000 [2]东北石油大学石油工程学院,黑龙江大庆163318

出　　处：《油田化学》2015年第4期541-544,553,共5页Oilfield Chemistry

基　　金：国家重点基础研究发展计划"973"项目"化学驱和微生物驱提高采收率的基础研究--化学驱产出物原油脱水和污水处理"(项目编号2005CB221305);中国博士后科学基金第57批面上资助项目"弱碱复合驱用Gemini表面活性剂的研制"(项目编号2015M572628)

摘　　要：为揭示烷基芳基磺酸盐结构与性能的关系,研究了系列表面活性剂的油水界面张力及分子结构对最小烷烃碳数(nmin)、临界胶束浓度(c_(CMC))和亲水亲油平衡值(HLB值)的影响。结果表明,芳基取代位置相同时,随着长链烷基碳数增加,烷基芳基磺酸盐的c_(CMC)先减小后增大,c_(CMC)越小其界面活性越高,表面活性剂分子在界面上排列越趋近于油/水兼溶型;相同链长的同系物,随着芳基向烷基碳链中间位置移动,其c_(CMC)和nmin呈现增大趋势,芳环取代基对支化程度的影响相当于4.05个亚甲基对c_(CMC)的影响。通过对HLB值的经验公式对比可知,戴维斯公式适合不同结构表面活性剂间HLB值的比较,而临界胶束浓度法适于同系物间的比较。In order to reveal the relationship between structure and properties of alkyl m-xylene sulfonate,the interfacial tension of the series surfactants and the effect of molecule structure of surfactants on minimum carbon number of alkane（nmin）,critical micelle concentration（c_（CMC））and hydrophilic-lipophilic balance（HLB）value were studied. The results showed that when aryl-substituted position was the same,c_（CMC）decreased firstly,and then increased with increasing number of long alkyl chain. The lower of c_（CMC）,the higher of interfacial activity of the surfactant was. And the molecules of surfactant arranged on the interface toward to oil/water compatible type. And for the same chain length of isomers,when the aryl group moved toward the center of chain,c_（CMC）and nmin increased. The effect of aryl substituent on the degree of branching was equal to the effect of 4.05 methylene groups on c_（CMC）. By comparing the empirical equation of HLB value,it was found that Davies equation was suitable for the HLB value comparison between surfactants with different structure,and critical micelle concentration equation was suitable for homologues。

关 键 词：烷基芳基磺酸盐 结构 界面性能 临界胶束浓度 亲水亲油平衡值 

分 类 号：TQ423.11[化学工程]