电导法测定无机盐对十二烷基磺酸钠溶液临界胶束浓度的影响  

Influence of inorganic salt on critical micelle concentration of sodium dodecyl sulfonate solution determined by conductivity method

作　　者：贺国旭[1] 张丽[1] 李光[1] 

机构地区：[1]平顶山学院化学化工系,河南平顶山467000

出　　处：《化学研究》2011年第2期68-71,74,共5页Chemical Research

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40℃时利用电导法测定了无机盐NaCl、KCl、CuCl2、ZnSO4、Fe(NO3)3及AlCl3对十二烷基磺酸钠(SDS)溶液临界胶束浓度(CMC)的影响,并推导了表示无机盐浓度和SDS溶液CMC值之间关系的线性方程.结果表明,随着各种无机盐浓度的增加,SDS溶液的CMC值降低,且不同价态的金属无机盐对SDS溶液CMC值的影响程度不同;相同价态的金属无机盐如NaCl和KCl,以及CuCl2和ZnSO4对CMC值的影响情况相似,而三价金属无机盐Fe(NO3)3和AlCl3的影响程度相差较大.The effect of inorganic salts NaCl,KCl,CuCl2,ZnSO4,Fe（NO3）3,and AlCl3 on the critical micelle concentration（CMC） of sodium dodecyl sulfonate（SDS） at 40 ℃ was studied by using conductivity method.Several linear mathematical equations concerning the relationship of inorganic salts concentration and the CMC were deduced.Results indicate that the CMC of SDS solution decreases with the increasing concentration of inorganic salts,and the inorganic salts with different valences influence the CMC to varied extent.The inorganic salts with the same valence,like NaCl and KCl as well as CuCl2 and ZnSO4,had similar effects on the CMC.But Fe（NO3）3 and AlCl3 had much different effects on the CMC.

关 键 词：电导法 无机盐 十二烷基磺酸钠 临界胶束浓度 测定 

分 类 号：O647.2[理学—物理化学]