also computed. Via the dynamic light scattering method, diameters of aggregates of the synthesized cationic gemini surfactants were determined in water. It was established that the diameters of these aggregates decrease with a temperature rise. Antibacterial properties of the synthesized cationic surfactants against sulfate-reducing bacteria (SRB) were studied.
一系列阳离子双子表面活性剂N,N'-双(烷基)-N,N'-双(2-羟丙基)
乙烯二
溴化二
铵,[C n H 2 n +1(CH 3 CH(OH)CH 2)NH (CH 2)2 NH(CH 2 CH(OH)CH 3)C n H 2 n +1 ] Br 2(其中n是尾链长度,n = 9、12和14),称为C n C 2 C n合成了[iso-Pr(OH)]。通过电导法和张力法,在不同温度(283至313 K)下,测定这些阳离子双子表面活性剂
水溶液的比电导率和表面张力。根据所获得的值,胶束和吸附参数,如临界胶束浓度(
CMC),最大表面过量(Γ最大),表面活性剂的极性基团(的最小横截面表面积甲分钟),吸附效率(PC 20),表面压力(π)和抗衡离子的结合度(β)。标准吉布斯自由能(ΔG °),焓(ΔH °)和熵(ΔS°)也被计算出来。通过动态光散射法,确定了合成的阳离子双子表面活性剂在
水中的聚集体直径