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研究了脂肪醇聚氧乙烯醚硫酸钠(AES)与非离子表面活性剂脂肪醇聚氧乙烯醚9(AEO_9)按不同质量比复配所得表面活性剂体系的临界胶束浓度(cmc)、平衡表面张力(γ)及动态表面张力(DST)。当得到AES-AEO_9复配体系质量比为3∶7时,临界胶束浓度(cmc)最小,为0.10mmol/L,γ_(cmc)为33.62mN/m;质量比为1∶9时动态表面张力最好,此时动态表面张力参数n为1.74,t*为1.32s,表面张力降低速率R_(1/2)为14.30mN/m·s。不同浓度动态表面张力结果表明,随复配体系浓度增加,诱导期节省时间t_i减少,R_(1/2)增加。
The critical micelle concentration (cmc) of surfactant system prepared by different mass ratio of fatty alcohol polyoxyethylene ether sulfate (AES) and nonionic surfactant fatty alcohol polyoxyethylene ether 9 (AEO_9) was studied. The equilibrium Surface tension (γ) and dynamic surface tension (DST). When the mass ratio of AES-AEO_9 system is 3: 7, the critical micelle concentration (cmc) is the smallest, 0.10mmol / L and the cmc is 33.62mN / m. The dynamic surface The tension is best when the dynamic surface tension parameter n is 1.74, t * is 1.32 s and the surface tension reduction rate R ½ (1/2) is 14.30 mN / m · s. The dynamic surface tension at different concentrations showed that with the increase of the concentration of the complex system, the induction time saved t_i reduced, R_ (1/2) increased.