Silver Nanoparticle Anchored With Novel Crosslinked Beaded Polystyrene/Polyamidoxime Sequential Interpenetrating Polymer Networks (IPNs) and its Antibacterial Activity

摘要

The present article describes the synthesis of silver nanoparticles (SNPs) impregnatated crosslinked beaded polystyrene/polyamidoxime (PSD/PAMD) interpenetrating polymer networks (IPNs). The developed SNPs-IPNs were tested for the antibacterial activity for water purification. Intially, the crosslinked beaded polystyrene/polyacrylonitrile (PSD/PAN) polymer was synthesized by radical sequential suspension polymerization method therafter, it has been converted into PSD/PAMD-IPN comprising amidoxime group, which acts as capping agent to anchor the silver ions. The silver ions impregnated with PSD/PAMD-IPN were converted into SNPs by chemical reduction methodology followed by stabilization without any deterioration or loss in polymer. IR and solid-state C-13 NMR spectra were use for the structural characterization of developed SNPs-IPN, while morphological characterization was examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The size of the SNPs formed with the networks were found less than 5 nm. The disinfection potential of SNPs-IPN was evaluated by different antibacterial test. The bactericidal test of SNPs-IPN revealed the promissing antibacterial efficieny with complete microbial inhibition within 4-6 h. The reusability of the SNPs-IPN beads was also tested for its repeated use for industrial application. (C) 2014 Society of Plastics Engineers