Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India.
J Colloid Interface Sci. 2010 Apr 1;344(1):75-80. doi: 10.1016/j.jcis.2009.12.037. Epub 2009 Dec 24.
The interfacial and micellization properties of binary and ternary mixtures of Gemini homologues, viz., tetramethylene-1,4-bis(N-hexadecyl-N,N-dimethylammonium bromide), pentamethylene-1,5-bis(N-hexadecyl-N,N-dimethylammonium bromide), and hexamethylene-1,6-bis(N-hexadecyl-N,N-dimethylammonium bromide), with various compositions were investigated at 25 degrees C using conductometric and tensiometric measurements. The micellar and adsorption characteristics like composition, activity coefficients, mutual interaction parameter, minimum area per molecule, free energy of micellization and adsorption have been evaluated and compared. The ideality/nonideality of the mixed micelles were tested in light of Clint, Rubingh, and Rubingh-Holland approaches. The mixed systems were found to undergo synergistic interaction, more so in mixed monolayer than in mixed micelle formation, and the micellar and interfacial properties were found to depend on the selection of surfactant pairing.
在 25°C 下，使用电导和张力测量法研究了 Gemini 同系物（即四亚甲基-1,4-双（N-十六烷基-N,N-二甲基溴化铵）、五亚甲基-1,5-双（N-十六烷基-N,N-二甲基溴化铵）和六亚甲基-1,6-双（N-十六烷基-N,N-二甲基溴化铵））二元和三元混合物的界面和胶束化性质，各种组成。评估和比较了胶束和吸附特性，如组成、活度系数、相互作用参数、每个分子的最小面积、胶束化和吸附的自由能。根据克林特、鲁宾和鲁宾-霍兰德的方法测试了混合胶束的理想/非理想性。混合体系被发现具有协同相互作用，在混合单层形成中比在混合胶束形成中更为明显，并且胶束和界面性质取决于表面活性剂配对的选择。
