Abstract
The ability of aminoethyl methacrylate cationic copolymers to stabilize silver nanoparticles in water was investigated. Sodium borohydride (NaBH4) was employed as a reducing agent for the preparation of silver nanoparticles. The objects were studied by ultraviolet-visible (UV-vis) spectroscopy, dynamic light scattering (DLS), analytical ultracentrifugation (AUC) and scanning electron microscopy (SEM). Formation of nanoparticles in different conditions was investigated by varying ratios between components (silver salt, reducing agent and polymer) and molar masses of copolymers. As a result, we were successful in obtaining nanoparticles with a relatively narrow size distribution that were stable for more than six months. Consistent information on nanoparticle size was obtained. The holding capacity of the copolymer was studied.
Highlights
In recent decades, there has been increasing interest in synthesis and studies of nanostructures of various natures and the materials based on these nanostructures, including metal-polymer nanocomposites [1,2,3]
Recently we have demonstrated the possibility of successful stabilization of silver nanoparticles solutions in theAgent presence of a cationic copolymer by transformation of Ag(+)
We studied the influence of relative fraction of the reducer on the process of silver nanoparticles in aqueous solutions in the presence of a cationic copolymer by transformation stabilization and final size distribution of NPs
Summary
There has been increasing interest in synthesis and studies of nanostructures of various natures and the materials based on these nanostructures, including metal-polymer nanocomposites [1,2,3]. Considerable attention is being focused on strategies for the preparation of monodisperse colloid solutions of noble metal nanoparticles, since they possess pronounced antibacterial properties [2,4,5]. They are promising source materials for making biosensors, photonic crystals, porous membranes, microlenses, for applications in colloidal lithography and so forth [6,7,8,9,10]. One method for stabilizing silver nanoparticles in solution is the use of Polymers 2019, 11, 1647; doi:10.3390/polym11101647 www.mdpi.com/journal/polymers
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