GSS471/TX-100复配体系动态表面活性研究  

Dynamic Surface Activity of GSS471/TX-100 Complex System

作　　者：祝霞[1] 喻红梅[1] 华平[1] 

机构地区：[1]南通大学化学化工学院

出　　处：《化学试剂》2018年第1期71-75,80,共6页Chemical Reagents

基　　金：江苏省科技计划资助项目(BY2015047-12)

摘　　要：用最大泡压法测定磺酸盐型双子表面活性剂1,4-丁二醇双子琥珀酸二仲辛酯磺酸钠（GSS471）与TX-100复配溶液的动态表面张力（DST）,详细表征了DST随时间的变化过程,研究了配比和浓度对其DST的影响,利用Rosen模型得出DST的n、t^＊、ti、tm和R（1/2）。结果表明,复配溶液浓度越高,吸附到界面的速率越快,介平衡表面张力值越小且越接近平衡值,DST曲线越低,且扩散势垒越小,吸附势垒越大,动态表面活性越高。当复配溶液形成大量胶束、n（GSS471）∶n（TX-100）=0.4∶0.6时,动态表面活性最好,且较两个单一表面活性剂的动态表面活性显著;当复配溶液形成微量或未形成胶束、n（GSS471）∶n（TX-100）=0.2∶0.8时,动态表面活性最好。The dynamic surface tensions（DST） of 1,4-butylenebis-secoctylsulfo succinate（GSS471） and TX-100 complex aqueous solutions were investigated using the maximum bubble pressure method,the variation of DST with time is described in detail,the effects of ratio and concentration on DST were investigated,and the characteristic parameters of DST are obtained by using Rosen model,such as n,t＊,ti,tm and R（1/2）.The results showed that,the higher the concentration of mixed solution,the faster the adsorption to the interface,the smaller the medium equilibrium surface tension value and the closer to the equilibrium value,the lower the DST curve,and the smaller the diffusion barrier,the greater the adsorption barrier,the higher the dynamic surface activity.When a large number of micelles were formed in the mixed solution,the dynamic surface activity of n（GSS471） ∶ n（TX-100） =0.4 ∶0.6 was the best and the dynamic surface activity was significantly higher than that of the single surfactant.When the mixed solution was formed in the presence of a small amount or no micelle,the dynamic surface activity was best when the ratio was n（GSS471） ∶ n（TX-100） = 0.2 ∶0.8.

关 键 词：琥珀酸酯磺酸盐 双子表面活性剂 复配 动态表面张力 动态表面活性 

分 类 号：O647.11[理学—物理化学]