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Effect of organic additives on formation and structure of polyelectrolyte-oppositely charged surfactant complexes

机译：有机添加剂对聚电解质-相反电荷的表面活性剂配合物形成和结构的影响

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摘要

Effect of butanol and Triton X-100 on formation, supramolecular organization and local dynamics of poly(N-ethyl-4-vinylpyridinium)-dodecyl sulfate complexes have been studied by UV spectroscopy, high-speed sedimentation, laser light scattering and electron spin resonance (ESR) spectroscopy. It was found that solubilization of butanol promotes aggregation of the complex species in solution and results in contraction of the region in which water-soluble complexes are formed. On the contrary, highly aggregated complexes disaggregate up to molecularly dispersed state upon addition of Triton X-100. It was found that under the experimental conditions neither butanol (up to 3 wt%) nor Triton X-100 ([Triton X-100]/[sodium dodecylsulfate] ≤ 1:1) cause destruction of the complexes. The results of ESR spin probe and spin label studies show that in both cases supramolecular realignments are accompanied by a slight increase of the local molecular mobility of surfactant ions in the complex micelles, segmental mobility of polyelectrolyte being unchanged.
机译：通过紫外光谱，高速沉降，激光散射和电子自旋共振研究了丁醇和Triton X-100对聚（N-乙基-4-乙烯基吡啶鎓）-十二烷基硫酸盐配合物的形成，超分子组织和局部动力学的影响（ESR）光谱。发现丁醇的溶解促进溶液中复合物种类的聚集，并导致其中形成水溶性复合物的区域收缩。相反，当加入Triton X-100时，高度聚集的复合物分解成分子分散状态。发现在实验条件下，丁醇（至多3wt％）或Triton X-100（[Triton X-100] / [十二烷基硫酸钠] ≤1∶1）都不会引起络合物的破坏。 ESR自旋探针和自旋标记研究的结果表明，在两种情况下，超分子重排均伴随着表面活性剂离子在复杂胶束中的局部分子迁移率略有增加，而聚电解质的分段迁移率未发生变化。

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