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Stabilization of Silver Nanoparticles by Cationic Aminoethyl Methacrylate Copolymers in Aqueous Media—Effects of Component Ratios and Molar Masses of Copolymers

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Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, 199034 St. Petersburg, Russia
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Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
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Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(10), 1647; https://doi.org/10.3390/polym11101647
Received: 30 August 2019 / Revised: 1 October 2019 / Accepted: 9 October 2019 / Published: 10 October 2019
(This article belongs to the Special Issue Polymer Structures in Solution)
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.
Keywords: Nanoparticles; Synthetic design of polymer structures in solution; Analytical ultracentrifugation; Light scattering; Colloid stability Nanoparticles; Synthetic design of polymer structures in solution; Analytical ultracentrifugation; Light scattering; Colloid stability
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Mikhailova, M.E.; Senchukova, A.S.; Lezov, A.A.; Gubarev, A.S.; Trützschler, A.-K.; Schubert, U.S.; Tsvetkov, N.V. Stabilization of Silver Nanoparticles by Cationic Aminoethyl Methacrylate Copolymers in Aqueous Media—Effects of Component Ratios and Molar Masses of Copolymers. Polymers 2019, 11, 1647.

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