Antimicrobial Cellulose Nanocomposite Films with In Situ Generations of Bimetallic (Ag and Cu) Nanoparticles Using Vitex
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Antimicrobial Cellulose Nanocomposite Films with In Situ Generations of Bimetallic (Ag and Cu) Nanoparticles Using Vitex negundo Leaves Extract G. Mamatha1 · P. Sowmya1,2 · D. Madhuri2 · N. Mohan Babu3 · D. Suresh Kumar4 · G. Vijaya Charan5 · Kokkarachedu Varaprasad6 · K. Madhukar1 Received: 6 July 2020 / Revised: 10 November 2020 / Accepted: 11 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Antimicrobial cellulose nanocomposite films with in situ synthesized bimetallic nanoparticles were developed by a threestep process. These antimicrobial cellulose nanocomposite films with in situ synthesized bimetallic, silver (Ag) and copper (Cu) nanoparticles (NPs) through the apozem of medicinal important plant Vitex negundo (Vavili) leaves, and which is acts as a bio-reductant and stabilizing agent. Through a three-step process, the cellulose films were prepared via a solution casting method and loaded with the apozem of V. negundo (Vavili) leaves via the swelling process. The resulted nanocomposite films were characterized by XRD, UV, FTIR, SEM/EDAX, TGA, UTM and antibacterial measurements. The XRD studies confirm that the presence of AgNPs and CuNPs in the cellulose matrix. The formation Ag/Cu, bimetallic nanoparticles were observed by the change of the color of the cellulose films. The presence of UV absorption peaks at around ~ 415 (Ag) and ~ 570 nm (Cu) confirms the formation of bimetallic cellulose nanocomposite films. The SEM and EDAX spectrum confirmed the presence of Ag, Cu, and Ag/Cu elements. The average size of the Ag–Cu, Ag, and Cu nanoparticles generated were ~ 60, ~ 67, and ~ 74 nm, respectively. The UTM and TGA studies revealed that bimetallic nanocomposites have high strength and stability than monometallic nanocomposite films. The nanocomposites have shown good antibacterial activities towards gram-positive and gram-negative bacteria. These cellulose nanocomposite films stand as good candidature for food, medical, and disinfection packaging materials.
* K. Madhukar [email protected] 1
Polymer Nanocomposites and Functional Materials Laboratory, Department of Physics, University College of Science, Osmania University, Hyderabad, Telangana 500007, India
2
Department of Physics, Osmania University College for Women, Koti, Hyderabad, Telangana 500 095, India
3
Department of Physics, South Campus, Telangana University, Kamareddy, Telangana 503 101, India
4
Department of Physics, University PG College Godavarikhani, Satavahana University, Godavarikhani, Telangana 505 209, India
5
Department of Chemistry, College of Science, Osmania University, Hyderabad, Telangana 500 007, India
6
Centro de Investigación de Polímeros Avanzados, Av.Collao 1202, Edificio Laboratorio CIPA, Concepción, Bío‑Bío, Chile
13
Vol.:(0123456789)
Journal of Inorganic and Organometallic Polymers and Materials
Graphic Abstract
Keywords Bimetallic nanoparticles · Nanocomposites · Cellulose · Vitex negundo (Vavili) · Antibacterial properties
1 Introductio
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