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首页> 外文期刊>Journal of Surfactants and Detergents >Synthesis, Antimicrobial Activity and Micellization of Gemini Anionic Surfactants in a Pure State as Well as Mixed With a Conventional Nonionic Surfactant
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Synthesis, Antimicrobial Activity and Micellization of Gemini Anionic Surfactants in a Pure State as Well as Mixed With a Conventional Nonionic Surfactant

机译：纯态以及与常规非离子表面活性剂混合的双子阴离子表面活性剂的合成，抗菌活性和胶束化

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New gemini anionic surfactants were prepared from sodium salts of monoalkyl sulfosuccinate esters of ethylene glycol having variably long tails (C_(12), Cl6, C_(18)) and dichloroethane. The chemical structures of the prepared surfactants were confirmed using different spectroscopic techniques. The surfaces tension values of the synthesized surfactants were measured at 25 °C individually or mixing at different molar fractions with ethoxylated alkylphenol. In all cases, mixed micellar aggregates were formed and critical micellar concentrations of binary mixtures containing different mole fractions of the surfactants were measured. The micellization processes of the individual and mixed surfactants were investigated. The effect of different alkyl chains of gemini anionic surfactants on properties of binary systems and molar ratio in the mixed aggregates were deduced. The critical micelle concentration of mixed surfactants shifted to lower values compared to those of the single surfactants. Effectiveness values increased with decreases in the mole fraction of gemini anionic surfactants. The negative values of interaction parameter (β) increased with increases in the chain length of anionic surfactants. The activity coefficient (f1,f2.) and total minimum surface area of mixed solution were calculated. Also, the gemini anionic surfactants prepared have moderate antimicrobial activity towards bacteria and not active towards fungi.
机译：由具有可变长尾巴的乙二醇的单烷基磺基琥珀酸酯的钠盐（C_（12），Cl6，C_（18））和二氯乙烷制备新的双基阴离子表面活性剂。使用不同的光谱技术确认了所制备的表面活性剂的化学结构。分别在25℃或在不同摩尔分数下与乙氧基化烷基酚混合测量合成的表面活性剂的表面张力值。在所有情况下，都会形成混合的胶束聚集体，并测量含有不同摩尔分数的表面活性剂的二元混合物的临界胶束浓度。研究了单个和混合表面活性剂的胶束化过程。推导了双子阴离子表面活性剂的不同烷基链对二元体系性能和混合骨料摩尔比的影响。与单一表面活性剂相比，混合表面活性剂的临界胶束浓度移至较低值。有效性值随双子阴离子表面活性剂摩尔分数的降低而增加。相互作用参数（β）的负值随着阴离子表面活性剂链长的增加而增加。计算混合溶液的活度系数（f1，f2。）和总最小表面积。同样，制备的双子阴离子表面活性剂对细菌具有中等的抗菌活性，而对真菌没有活性。

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