Abstract

A thermodynamic theory has been formulated to substantiate a number of new phenomena experimentally revealed in the colloid science of surfactants. A description has been given for the formation of particular micelles via surfactant adsorption on their cores, the role of which is played by monomers and dimers of phthalocyanines. This gives rise to the formation of surfactant micelles and protomicelles containing solubilized monomers and dimers. The gradual formation of the (proto)micelles (coverage of the core surface with surfactant molecules or ions) upon the addition of a surfactant to a system is completed before the critical micelle concentration of the surfactant is reached. In terms of the chemical potentials and concentrations, equations have been derived to describe the influence of surfactants on the state of the monomers and dimers of phthalocyanines in aqueous solutions. It has been found that the concentrations of both particles grow with surfactant concentration. Alterations in the distribution of dimers over their structural forms with variations in surfactant concentration have been analyzed. It has been shown that, as surfactant content in a solution increases, the distribution of dimers shifts toward labile structures with the inevitable disintegration of phthalocyanine dimers into monomers. An equation has been derived to determine a new physical parameter, monomerization concentration, which corresponds to the passage from the dimeric state (inherent in phthalocyanines in pure water or dilute surfactant solutions) to the monomeric state in surfactant solutions. Equations have been presented for the chemical potentials of micelles (containing solubilized phthalocyanine monomers) and protomicelles (containing solubilized dimers). The latter actually disappear when the surfactant concentration rises approaching the critical micelle concentration.

中文翻译：

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表面活性剂水溶液中酞菁单体的理论研究

摘要

已经建立了热力学理论，以证实表面活性剂胶体科学实验揭示的许多新现象。已经给出了通过表面活性剂吸附在其芯上形成特定胶束的描述，该作用由酞菁的单体和二聚体发挥。这导致表面活性剂胶束和protomicelles的形成含有可溶的单体和二聚体。在表面活性剂达到临界胶束浓度之前，完成了向系统中添加表面活性剂后（原始）胶束的逐步形成（用表面活性剂分子或离子覆盖核心表面）。在化学势和浓度方面，已经推导了方程来描述表面活性剂对水溶液中酞菁单体和二聚体状态的影响。已经发现两种颗粒的浓度随表面活性剂浓度而增长。已经分析了二聚体在其结构形式上的分布随表面活性剂浓度的变化而变化。已经表明，随着溶液中表面活性剂含量的增加，酞菁二聚体不可避免地分解成单体，二聚体的分布向不稳定的结构转移。已经推导出了一个方程式，以确定一个新的物理参数，单体化浓度，对应于从二聚态（纯水或稀表面活性剂溶液中的酞菁固有）到表面活性剂溶液中单体状态的转变。已经提出了胶束（含有溶解的酞菁单体）和原胶束（含有溶解的二聚体）化学势的方程式。当表面活性剂浓度上升到接近临界胶束浓度时，后者实际上消失了。