Open AccessFormation of Silver Nanoparticles in PVA-PEG Hydrogel under Electron Irradiation
Author(s) -
V. B. Neimash,
H. D. Kupianskyi,
I. V. Olkhovyk,
V. I. Styopkin,
P. M. Lytvynchuk,
V. Yu. Povarchuk,
I. S. Roguts’kyi,
Yu. A. Furmanov,
S. M. Titarenko
Publication year - 2019
Publication title -
ukrainian journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 17
eISSN - 2071-0194
pISSN - 2071-0186
DOI - 10.15407/ujpe64.1.41
Subject(s) - polyvinyl alcohol , materials science , nanoparticle , polyethylene glycol , scanning electron microscope , silver nanoparticle , irradiation , ionic bonding , chemical engineering , peg ratio , electron beam processing , colloid , nuclear chemistry , nanotechnology , chemistry , composite material , organic chemistry , ion , physics , finance , nuclear physics , engineering , economics
The formation of silver nanoparticles in a hydrogel on the basis of polyvinyl alcohol and polyethylene glycol at its crosslinking under the electron irradiation has been studied using the optical spectroscopy and scanning electron microscopy methods. The growth of nanoparticles 40–70 nm in size and their clustering into aggregates about a few hundred nanometers in diameter are demonstrated. The total concentration of nanoparticles and their size correlate with the concentration of ionic silver in the initial solution and the electron irradiation dose. The formation of nanoparticles is interpreted as a result of the radiation-induced chemical reduction of silver in the solution that is spatially confined in the cells of a 3D microstructure in the crosslinked hydrogel. The radiation-crosslinked hydrogel demonstrates an antiseptic effect for 7 of 8 tested microorganisms at silver concentrations of 0.001–0.003 wt.%, which is at least an order of magnitude lower than effective concentrations of ionic and colloidal silvers.