formation of the hydrate at 25°C;;

poly(vinyl alcohol) in water Kinetics; Irradiation (UV/VIS); aq. soln. of PVA:SPEEK (molar ratio 20:1) placed in glovebag, slowly bubbled N2 for 1 h, combined with aq. soln. of Ag salt (also bubbled with N2 for 20 min in other glovebag), reacted in optical test tube by photolysis at 350 +/- 15 nm at 29°C; react. controlled by UV-vis spectroscopy, Ag crystallites characterized by XRD;