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溶液中添加的苯磺酸钠(SNzS)和萘磺酸钠(SNphS)与C12-s-C12·2Br产生强烈结合,增大了Gemini表面活性剂分子的疏水性,明显促进其在气/液界面的吸附和在溶液中的聚集.这使得体系降低水表面张力的效率和能力大大提高,并且在表面活性剂浓度很低时就生成了小聚集体.因而,此时表面张力法测得的cmc仅具有表观上的意义,只反映了表面活性剂在气/液界面达到饱和吸附时的临界浓度.SNphS的疏水性强于SNzS,更有效地促进了C12-s-C12·2Br的吸附和聚集.
The addition of sodium benzenesulfonate (SNzS) and sodium naphthalene sulfonate (SNphS) to the solution of C12-s-C12 · 2Br resulted in an increase of the hydrophobicity of the Gemini surfactant molecule and significantly promoted its adsorption in gas / liquid Adsorption of the interface and aggregation in solution.This makes the system greatly reduce the efficiency and ability of water surface tension and small aggregates formed when the surfactant concentration is low.Therefore, cmc has only an apparent significance and only reflects the critical concentration at which the surfactant reaches the saturation adsorption at the gas / liquid interface.The hydrophobicity of SNphS is stronger than that of SNzS, which promotes the adsorption of C12-s-C12.2Br more effectively And gather.