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Molecular-thermodynamic theories of micellization of multicomponent surfactant mixtures and of pH-sensitive surfactants

机译:多组分表面活性剂混合物和pH敏感表面活性剂胶束化的分子热力学理论

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摘要

This thesis focuses on two research areas that are particularly relevant to the practical application of surfactant science: (1) the micellization of multicomponent surfactant mixtures, and (2) the micellization of pH-sensitive (or amphoteric) surfactants. Surfactant formulations of practical utility typically consist of many surfactant components. In many practical applications, pH-sensitive surfactants are added as a secondary surfactant because they enhance performance properties, including solubility, foaming, and mildness to the skin or to the eyes. In addition, pH-sensitive surfactants may be used eectively in novel applications where pH variations can be utilized to control self-assembly, including controlled drug release, targeted gene delivery, and the fabrication of nanoscale materials for optics, electronics, and sensors. First, a molecular-thermodynamic (MT) theory was developed to account for counterion binding to mixed micelles composed of ionic-nonionic and ionic-zwitterionic binary surfactant mixtures. The theory successfully predicted the degree of counterion binding ([beta]) of monovalent and multivalent ions to mixed micelles as a function of the micelle composition ([alpha]).
机译:本文的研究重点是与表面活性剂科学的实际应用特别相关的两个研究领域:(1)多组分表面活性剂混合物的胶束化,和(2)pH敏感(或两性)表面活性剂的胶束化。具有实用性的表面活性剂制剂通常由许多表面活性剂组分组成。在许多实际应用中,添加pH敏感表面活性剂作为辅助表面活性剂是因为它们增强了性能,包括对皮肤或眼睛的溶解性,起泡性和温和性。另外,对pH敏感的表面活性剂可以有效地用于新型应用中,在这些应用中,可以利用pH值变化来控制自组装,包括控制药物释放,靶向基因传递以及制造用于光学,电子和传感器的纳米级材料。首先,发展了分子热力学(MT)理论来说明抗衡离子与由离子-非离子和离子-两性离子二元表面活性剂混合物组成的混合胶束的结合。该理论成功地预测了单价和多价离子与混合胶束的抗衡离子结合度(β)随胶束组成(α)的变化。

著录项

  • 作者

    Goldsipe Arthur Clayton;

  • 作者单位
  • 年度 2006
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
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