Green synthesis of silver nanoparticles using dextran‐graft‐polyacrylamide as template. (1st May 2016)

• Record Type: Journal Article
• Authors: Kutsevol, Nataliya; Chumachenko, Vasyl; Rawiso, Michel; Shyichuk, Alexander
• Is Part Of: Micro & nano letters. Volume 11:Number 5(2016)
• Page Start: 256
• Page End: 259
• Publication Date: 2016-05-01
• Subjects: silver -- nanoparticles -- nanofabrication -- polymer blends -- transmission electron microscopy -- antibacterial activity; silver nanoparticle synthesis -- dextran‐graft‐polyacrylamide -- auxiliary capping agent -- star‐branched copolymer -- biocompatibility -- phagocytic index value -- transmission electron microscopy -- neutral solution -- alkaline solution -- Ag; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2015.0547
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : Synthesis of silver nanoparticles (NPs) has been performed using partially hydrolysed star‐shaped graft copolymer of polyacrylamide to dextran as auxiliary capping agent. The star‐branched copolymer proved to be a very good template for NP synthesis due to high local concentration of functional groups. Good biocompatibility of the copolymer was confirmed by phagocytic index value equal to 84%. In addition to this, the green synthesis approach was ensured using glucose as non‐toxic reducing agent. Surface plasmon resonance spectra of the obtained NPs contained two characteristic bands situated at 270–300 and 420–450 nm. Transmission electron microscopy revealed that NPs synthesised in neutral solution (pH = 7) have average diameters equal 10–60 nm with a small portion of NP aggregates. Synthesis carried out at pH = 12 resulted in increased yield of NPs probably due to increased reducing power of glucose in alkaline medium. NPs synthesised in alkaline solution were sized from 20 to 300 nm and contained a large portion of NP aggregates.