Abstract

A high-productivity method has been proposed for the synthesis of silver nanoparticles with sizes of 11.2 ± 0.3 nm in water-in-oil emulsions stabilized with sorbitan monooleate (Span 80). It has been shown that, in the course of the synthesis, initial reagents are transferred from emulsion droplets into Span 80 micelles. As a result, nanoparticles are formed due to the intermicellar exchange by the mechanism of micellar (microemulsion) synthesis. The addition of an anionic surfactant, sodium bis(2-ethylhexyl)sulfosuccinate (AOT) provides the nanoparticle surface with a negative charge (ζ-potential is –50.0 mV). This has made it possible to employ nonaqueous electrophoresis for obtaining a liquid concentrate, the evaporation of which has yielded a dry Ag/Span 80/AOT composite. Silver contents in the concentrate and composite are 30 and 70%, respectively. X-ray diffraction and thermal analysis methods have been used to study the composite thermolysis, which results in the formation of conductive silver films (0.43 Ω/sq).

中文翻译：

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用山梨糖醇单油酸酯和双（2-乙基己基）磺基琥珀酸钠在正癸烷中稳定的电泳浓缩液制备导电银膜

摘要

已经提出了一种高生产率的方法，用于在用脱水山梨糖醇单油酸酯稳定的油包水乳液中合成尺寸为11.2±0.3 nm的银纳米粒子（Span 80）。已经表明，在合成过程中，初始试剂从乳液液滴转移到Span 80胶束中。结果，由于胶束（微乳液）合成的机制进行的胶束间交换，形成了纳米颗粒。添加阴离子表面活性剂双（2-乙基己基）磺基琥珀酸钠（AOT）可为纳米颗粒表面提供负电荷（ζ电位为–50.0 mV）。这使得可以采用非水电泳来获得浓缩液，其浓缩液蒸发后得到干燥的Ag / Span 80 / AOT复合材料。精矿和复合物中的银含量分别为30％和70％，分别。X射线衍射和热分析方法已用于研究复合材料的热分解，从而形成导电银膜（0.43Ω/ sq）。