Structural characteristics and bonding environment of Ag nanoparticles synthesized by gamma irradiation within thermo‐responsive poly(N‐isopropylacrylamide) hydrogel

摘要: To produce well-defined metal clusters stabilized in protective matrix, poly(N-isopropylacrylamide) (PNiPAAm) hydrogel with different initial concentration of polymer was used as nanoreactor. The situ synthesis well dispersed silver nanoparticles (AgNPs) performed by gamma irradiation. obtained AgNPs are spherical shape the diameter less than 20 nm. Crystalline properties such size, texture coefficient, strain, stress, lattice parameter, d-spacing, and dislocation density have been calculated using XRD data. Results confirm that changes parameter crystalline sensitively reflect their state strain stress depending on formation conditions (i.e., PNiPAAm) AgNPs. negative compression were observed for smaller (lattice contraction), while larger positively strained under tensile expansion). XPS spectra revealed donor-acceptor type interaction between carbonyl oxygen from PNiPAAm (positive shift high BE component O 1s Ag 3d BE). greater incorporated more concentrated PNiPAAm, resulted binding sites stronger polymer. POLYM. COMPOS., 2015. © 2015 Society Plastics Engineers