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Effect of nonionic micelles of Triton X-100 on protonation equilibria of salicylic acid derivatives

机译:Triton X-100非离子胶束对水杨酸衍生物质量平衡的影响

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摘要

To gain more information about the effect of surfactant on salicylic acid derivatives, the stoichiometric protonation constants of 5-sulphosalicylic acid and 5-hydroxysalicylic acids in 0.0-2.5% (v/v) Triton X-100 (TX100)-water mixtures were determined at an ionic strength of 0.16 mol dm(-3) and at 303 K. A potentiometric method was used and the calculation of constants was carried out using the computer program MINIQUAD75. These protonation constants values have been found to shift in micellar media as compared to those in pure water. The change of log values of step-wise protonation constants with mole fraction of the medium have been explained based on specific solute-solvent interactions. In this study distributions of species, percentage of species composition, protonation equilibria and effect of influential parameters on the protonation were also discussed.
机译:为了获得有关表面活性剂对水杨酸衍生物的影响的更多信息,测定了0.0-2.5%(V / V)Triton X-100(TX100)-WALT混合物的5-磺水杨酸和5-羟基丙烯酸的化学计量质量常数 在0.16mol dm(-3)和303k处的离子强度。使用电位方法,使用计算机程序突尼斯75进行常数的计算。 已经发现这些质子化常数值与纯水中的那些相比,胶束培养基转移。 已经基于特异性溶质溶剂相互作用解释了培养基的摩尔级分的级摩尔级分的数值的变化。 在本研究的物种分布中,还讨论了物种组成的百分比,质子化平衡和对质原料的影响的影响。

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