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Clouding phenomena and thermodynamics of TX?100 + polyethylene glycol mixture: influence of several electrolytes

机译：湿润现象和热力学TX吗?聚乙二醇混合物:数的影响电解质

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摘要

Herein, the solution properties of Triton X-100 (TX-100) and polyethylene glycol (PEG) mixtures in H_2O and salt (potassium, sodium, and ammonium) solutions have been observed through the cloud point (CP) detection technique. The present observation reveals that the values of CP of the TX-100 + PEG mixed solution, in the presence of different salts, undergo a decrease compared to the values found in H_2O medium. The anion of common salts, such as sodium, potassium, and ammonium, was found to reduce the values of CP in the sample mixtures in the order: SO_4~(2?) > Cl~? > PO_4~(3?). The ΔG_c~0 value was calculated as positive in all experimental cases, and this observation manifests a non-spontaneous nature of clouding system. The non-spontaneity of TX-100 + PEG clouding process was gradually declined with the enhancement of salt concentrations. The ΔH_c~0 and ΔS_c~0 values were found negative, which experience a decrease with the addition of more concentrated salt solutions in almost all of the cases studied. The negative values of ΔH_c~0 and ΔS_c~0 indicate the existence of exothermic interactions (hydrogen bonding and weak dipole–dipole forces) operating between TX-100 and PEG. A linear relationship was established between ΔH_c~0 and ΔS_c~0 with R~2 values in the range of 0.9997–1.00.
机译：在此,特里同的解决方案属性x - 100(tx - 100)和聚乙二醇(PEG)的混合物在H_2O和盐(钾、钠、和铵)解决方案曾被观察到云点(CP)检测技术。目前的观测表明,CP的值tx - 100 +钉住混合解决方案,存在不同的盐,经历一次减少相比H_2O介质中找到的值。共同盐的阴离子,如钠、钾、和铵,发现减少的值CP样品混合物的秩序:SO_4 ~ (2 ?)> Cl ~ ?计算在所有积极的实验情况下,这个观察体现发酵云系统的性质。tx - 100 +挂钩过程逐渐蒙上了阴影拒绝与盐的增强浓度。发现消极的,经验减少增加更多的集中盐的解决方案在几乎所有的情况下进行了研究。值ΔH_c ~ 0和ΔS_c ~ 0表示放热交互(氢的存在键和弱取向力)操作tx - 100和挂钩。之间建立ΔH_c ~ 0和ΔS_c ~ 0 R ~ 2值在0.9997到-1.00之间。

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