摘要
Abstract (Summary)The structures formed during the clouding of a number of non-ionic surfactants were studied with a variety of techniques. Triton X-114 phases were studied in detail with turbidimetry and photon correlation spectroscopy to understand the nature of the particle sizes formed through all the clouded and de-clouded phases. Turbidimetry and particle sizes were found to closely correlate, and indicated a marked decrease in particle sizes at the high temperature de-clouded boundary.A polarity sensitive probe (pyrene) was introduced to several non-ionic surfactant solutions which indicated that the micellar interior did not undergo significant polarity shifts through any clouded or de-clouded phases. The presence of a reduced 11/13 ratio at low concentrations indicated the presence of pre-micellar aggregates forming below the CMC, but these aggregates were not thermally stable.Perylene was introduced to some Triton surfactant solutions to accept fluorescence resonance energy transfer from the excited surfactant species. Triton molecules in solution aggregated in a manner such that the native fluorescence signal could be used to distinguish between surfactant monomer and aggregate. The probe was found to associate only with those Triton species which were greatly sequestered into the interior of the micelles or large clouded aggregates.High pressure liquid chromatography was used to distinguish POE distribution differences before and after the formation of an aqueous and coacervate layer due to cloud point separations. Shorter chain lengths were found to have an affinity for the clouded phase, and thus the coacervate layer as well.
摘要译文
的一些非离子表面活性剂的浊期间形成抽象（摘要）的结构，研究了各种技术。的Triton X-114相进行了详细研究与比浊法和光子相关光谱法来理解通过所有的白浊和去混浊相形成的粒度的性质。比浊法和颗粒的尺寸被发现密切相关，并表示在颗粒尺寸在高温脱白浊boundary.A极性敏感探针（芘）的显着降低被引入到几个非离子表面活性剂溶液，其表明胶束内部做通过任何云或去云阶段没有经过显著极性变化。的减小的11/13比率在低浓度下存在表明预胶束聚集形成低于CMC的存在，但这些聚集体不会热stable.Perylene引入一些的Triton表面活性剂溶液，以接受从激发荧光共振能量转移表面活性剂的种类。的Triton分子在溶液中聚集的方式，使得所述天然荧光信号可以用表面活性剂单体和聚合之间进行区分。探针被发现仅与那些的Triton物种被大大螯合成胶束或大白浊aggregates.High压液相色谱的内部相关联，使用之前，并且由于水和凝聚层的形成后进行区分POE分布的差异浊点分离。较短链长中发现有对白浊相的亲和力，因此，凝聚层为好。
Toerne, Kevin Alfred. Aggregate structure in clouded non-ionic surfactant solutions[D]. US: University of Idaho, 2002