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首页> 外文期刊>The European physical journal, E. Soft matter >Nanostructures of colloidal complexes formed in oppositely charged polyelectrolyte/surfactant dilute aqueous solutions
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Nanostructures of colloidal complexes formed in oppositely charged polyelectrolyte/surfactant dilute aqueous solutions

机译：在带相反电荷的聚电解质/表面活性剂稀水溶液中形成的胶体复合物的纳米结构

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摘要

Small-angle neutron scattering measurements were performed on dilute solutions of carboxymethylcellulose/DTAB complexes in water in order to determine their size, shape and internal structures. At low polymer content, the complexes are spherical, rather monodisperse and probably made of polymer chains intercalated between surfactant micelles. Moreover, we show that these micelles have a similar cubic arrangement than found in polymer/surfactant precipitates formed at higher surfactant concentrations. At larger polymer content, in the semi-dilute polyelectrolyte regime, the complexes are larger, softer and polydisperse. However, they possess a similar internal structure in both regimes. Carboxymethylcellulose/CTAB complexes are also large, soft and polydisperse but do not seem to exhibit well-defined internal structures.
机译：对羧甲基纤维素/ DTAB复合物的稀溶液在水中进行小角中子散射测量，以确定它们的大小，形状和内部结构。在低聚合物含量下，络合物为球形，而是单分散的，可能由插入表面活性剂胶束之间的聚合物链制成。此外，我们显示这些胶束具有与在较高表面活性剂浓度下形成的聚合物/表面活性剂沉淀相似的立方排列。在较高的聚合物含量下，在半稀释的聚电解质体系中，配合物较大，较软且具有多分散性。但是，它们在两种制度下都具有相似的内部结构。羧甲基纤维素/ CTAB复合物也很大，柔软且具有多分散性，但似乎没有表现出明确的内部结构。

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