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对阳离子双子表面活性剂四亚甲基-1,2-双(十八烷基二甲基烷基溴化铵)(C18-4-C18.2Br)的流变特性进行了研究,考察了表面活性剂质量分数、水杨酸钠质量分数及温度对表面活性剂溶液黏度和黏弹性的影响。C18-4-C18.2Br溶液的黏度随着质量分数的增加而增加。随着水杨酸钠质量分数的增加,C18-4-C18.2Br溶液的黏度和黏弹性出现先增加后下降的过程。温度对C18-4-C18.2Br溶液的黏度有较大影响,水杨酸钠的加入可明显提高C18-4-C18.2Br溶液的抗温性。TEM结果表明,适量的水杨酸钠能够促进C18-4-C18.2Br胶束从球形向蠕虫状转变,过量的水杨酸钠又会使蠕虫状胶束向囊泡转变。
The rheological properties of the cationic gemini surfactant tetramethylene-1,2-bis (octadecyldimethylammonium bromide) (C18-4-C18.2Br) were studied. The effects of the surface Effect of active ingredient mass fraction, sodium salicylate mass fraction and temperature on viscosity and viscoelasticity of surfactant solution. The viscosity of C18-4-C18.2Br solution increased with the increase of mass fraction. With the increase of sodium salicylate mass fraction, the viscosity and viscoelasticity of C18-4-C18.2Br solution firstly increased and then decreased. The temperature of C18-4-C18.2Br solution viscosity has a greater impact, the addition of sodium salicylate can significantly improve the C18-4-C18.2Br solution temperature resistance. TEM results show that sodium salicylate can promote the transformation of C18-4-C18.2Br micelles from spherical to worm-shaped, and excessive sodium salicylate can transform wormlike micelles into vesicles.