添加剂对十二烷基苯磺酸钠溶液cmc的影响  

The influence of additive on the cmc of sodium dodecyl benzene sulfonate solution

作　　者：贺国旭[1] 潘自红[1] 李松田[1] 李雪[1] 李寿松[1] 

机构地区：[1]平顶山学院化学化工学院,河南平顶山467000

出　　处：《应用化工》2011年第4期634-636,共3页Applied Chemical Industry

基　　金：平顶山学院高层次人才科研启动经费资助项目(2008011)

摘　　要：在25℃时利用电导法测定了添加剂甲醇、乙醇、丙醇、PEG、β-环糊精和NaOH对十二烷基苯磺酸钠(SDBS)溶液的临界胶束浓度的影响。实验结果表明,随着甲醇、乙醇、丙醇、PEG、NaOH加入量的增加,均使SDBS溶液的cmc值降低;不同分子量的PEG对SDBS溶液cmc值的影响是相同体积分数的PEG200<PEG400,相同质量浓度的PEG600<PEG1000;β-环糊精的加入,使SDBS溶液的cmc值增大,且cmc与β-环糊精的质量浓度之间呈线性关系,相关系数R=0.998 8,直线方程式为Y=1.242+0.58X。The effect of additives（methanol,ethanol,propyl alcohol,PEG,β-cyclodextrin,NaOH） on the critical micelle concentration of sodium dodecyl benzene sulfonate（SDBS） has been studied by using conductivity method at 25 ℃.The experiment results indicate that the cmc of SDBS solution decrease with increasing additives such as methanol,ethanol,propyl alcohol,PEG and NaOH.PEG200 and PEG400 with the same volume proportion have the different effects on the cmc which are in the order of PEG200PEG400,PEG600 and PEG1000 with the same mass concentration have the different effects on the cmc which are in the order of PEG600〈PEG1000.The cmc of SDBS solution increase with the addition of β-cyclodextrin,and there is linear relationship between the cmc and the mass concentration of β-cyclodextrin,correlation coefficient R=0.998 8,linear equation：Y=1.242＋0.58X.

关 键 词：十二烷基苯磺酸钠 临界胶束浓度 添加剂 

分 类 号：TQ423.1[化学工程] O647.2[理学—物理化学]