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SDS/n-C5H11OH/H2O溶致液晶中SDS分子的扩散特性
引用本文:徐建新,刘天晴,郭荣.SDS/n-C5H11OH/H2O溶致液晶中SDS分子的扩散特性[J].物理化学学报,2003,19(4):364-367.
作者姓名:徐建新  刘天晴  郭荣
作者单位:School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002
基金项目:国家自然科学基金(20073038,20233010)资助项目~~
摘    要:以铂微电极法测定了在SDS/n-C5H11OH/H2O溶致液晶中SDS(十二烷基硫酸钠)分子的扩散系数.结果表明,恒定质量比SDS/n-C5H11OH条件下,溶致液晶中SDS分子的扩散系数随体系中水含量的增加而增加;恒定质量比SDS/H2O,溶致液晶中SDS分子的扩散系数随正戊醇含量的增加而增加;恒定质量比H2O/n-C5H11OH ,溶致液晶中SDS分子的扩散系数随SDS含量的增加而降低.六角状液晶中SDS分子的扩散系数比层状液晶中SDS分子的扩散系数低约1个数量级,而比W/O、O/W胶束的扩散系数低3~5个数量级.

关 键 词:十二烷基硫酸钠(SDS)  微电极  胶束  溶致液晶  扩散系数  
收稿时间:2002-08-05
修稿时间:2002年8月5日

Determination of the Diffusion Coefficients of SDS Molecules in SDS/n-C5H11OH/H2O Lyotropic Liquid Crystal
Xu Jian,Xin Liu Tian,Qing Guo Rong.Determination of the Diffusion Coefficients of SDS Molecules in SDS/n-C5H11OH/H2O Lyotropic Liquid Crystal[J].Acta Physico-Chimica Sinica,2003,19(4):364-367.
Authors:Xu Jian  Xin Liu Tian  Qing Guo Rong
Institution:School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002
Abstract:The diffusion coefficients of the SDS(Sodium dodecyl sulfate) molecules in lyotropic liquid crystal of SDS/n C5H11OH/H2O system have been determined by the method of platinum microelectrode voltammetry.The results show that the diffusion coefficients of SDS molecules in lyotropic liquid crystal increase with water content at constant mass ratio of SDS/n C5H11OH and also with n pentanol content at constant mass ratio of SDS/H2O,but decrease with SDS content at constant mass ratio of H2O/n C5H11OH.The diffusion coefficient of the SDS molecule in hexagonal liquid crystal is nearly one order of magnitude less than that of the SDS molecule in lamellar liquid crystal,but is about three to five orders less than that of the W/O and the O/W droplets.
Keywords:SDS  Microelectrode  Micelle  Lyotropic liquid crystal  Diffusion coefficient  
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