引用本文:
于涛, 刘红娟, 丁伟, 曲广淼, 国胜娟. 高纯度多烷基苯磺酸盐水溶液的表面性质[J]. 应用化学,
2008, 25(9): 1107-1109.
Citation: YU Tao, LIU Hong-Juan, DING Wei, QU Guang-Miao, GUO Sheng-Juan. Surface Properties of Aqueous Solutions of High-purity Poly-alkylbenzene Sulfonates[J]. Chinese Journal of Applied Chemistry, 2008, 25(9): 1107-1109.
Citation: YU Tao, LIU Hong-Juan, DING Wei, QU Guang-Miao, GUO Sheng-Juan. Surface Properties of Aqueous Solutions of High-purity Poly-alkylbenzene Sulfonates[J]. Chinese Journal of Applied Chemistry, 2008, 25(9): 1107-1109.
高纯度多烷基苯磺酸盐水溶液的表面性质
摘要:
测定了自制的5种高纯度多烷基苯磺酸盐在25℃下的临界胶束浓度cmc(1×10-4 mol/L),测定了临界胶束浓度下的表面张力γcmc(mN/m)。cmc和γcmc值分别为:(C12-5S)3.889和32.69;(C14-3S)1.000和31.40;(C14-5S)1.173和30.21;(C14-7S)3.720和28.55;(C16-5S)1.016和29.96。根据Gibbs吸附公式求出饱和吸附量Γmax,饱和吸附面积Am。及求出将水溶液表面张力降低20 mN/m所需表面活性剂浓度的负对数pc20。从分子结构对求出的结果进行了解释。
English
Surface Properties of Aqueous Solutions of High-purity Poly-alkylbenzene Sulfonates
Abstract:
The critical micelle concentrations(cmc,1×10-4 mol/L) and the surface tension(γcmc,mN/m) of poly-alkylbenzene sulfonates synthesized in the laboratory were measured at 25 ℃.The cmc and γcmc values were(C12-5S) 3.889,32.69;(C14-3S) 1.000,31.40;(C14-5S) 1.173,30.21;(C14-7S) 3.720,28.55;(C16-5S) 1.016,29.96,respectively.The adsorption capacity Γmax,the saturated adsor-ption area Am,and the surfactant concentration needed in order to reduce surface tension by 20 mN/m(pc20) were calculated according to Gibbs adsorption equation.Their characteristics were explained based on molecular structure.
-
-
扫一扫看文章
计量
- PDF下载量: 0
- 文章访问数: 0
- HTML全文浏览量: 0
下载:
