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Preparation of Hydrogel/Silver Nanohybrids Mediated by Tunable-Size Silver Nanoparticles for Potential Antibacterial Applications

1
Instituto de Química de Recursos Naturales, Universidad de Talca, Talca 3460000, Maule, Chile
2
Multidisciplinary Agroindustry Research Laboratory, Carrera de Ingeniería en Construcción e Instituto de Ciencias Químicas Aplicadas, Universidad Autónoma de Chile, Talca 3460000, Chile
3
Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago 8320000, Chile
4
Bio & NanoMaterials Lab| Drug Delivery and Controlled Release, Universidad de Talca, Talca 3460000, Maule, Chile
5
Departamento de Microbiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca 3460000, Maule, Chile
6
Center for the Development of Nanoscience and Nanotechnology, Santiago 8320000, Chile
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Polymers 2019, 11(4), 716; https://doi.org/10.3390/polym11040716
Received: 25 January 2019 / Revised: 25 February 2019 / Accepted: 16 April 2019 / Published: 19 April 2019
(This article belongs to the Special Issue Hydrogels and Gels for Biomedical and Sustainable Applications)
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Abstract

In this study, a versatile synthesis of silver nanoparticles of well-defined size by using hydrogels as a template and stabilizer of nanoparticle size is reported. The prepared hydrogels are based on polyvinyl alcohol and maleic acid as crosslinker agents. Three hydrogels with the same nature were synthesized, however, the crosslinking degree was varied. The silver nanoparticles were synthesized into each prepared hydrogel matrix achieving three significant, different-sized nanoparticles that were spherical in shape with a narrow size distribution. It is likely that the polymer network stabilized the nanoparticles. It was determined that the hydrogel network structure can control the size and shape of the nanoparticles. The hydrogel/silver nanohybrids were characterized by swelling degree, Thermal Gravimetric Analysis (TGA), Fourier Transform Infrared (FT-IR), Scanning Electron Microscopy (SEM) and Transmission Electron Microscope (TEM). Antibacterial activity against Staphylococcus aureus was evaluated, confirming antimicrobial action of the encapsulated silver nanoparticles into the hydrogels. View Full-Text
Keywords: silver nanoparticles; hydrogel; crosslinking; template; maleic acids; polyvinyl alcohol; antibacterial activity silver nanoparticles; hydrogel; crosslinking; template; maleic acids; polyvinyl alcohol; antibacterial activity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Rodríguez Nuñez, Y.A.; Castro, R.I.; Arenas, F.A.; López-Cabaña, Z.E.; Carreño, G.; Carrasco-Sánchez, V.; Marican, A.; Villaseñor, J.; Vargas, E.; Santos, L.S.; Durán-Lara, E.F. Preparation of Hydrogel/Silver Nanohybrids Mediated by Tunable-Size Silver Nanoparticles for Potential Antibacterial Applications. Polymers 2019, 11, 716.

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