Fabrication of silver/cross-linked poly(vinyl alcohol) cable-like nanostructures under gamma-ray irradiation

摘要

Ag/cross-linked poly (vinyl alcohol) (PVA) cable-like nanostructures were synthesized with control in an aqueous solution of a hydrolysable amphiphilic block polymer, poly(vinyl acetone) (PVKA) (ketalization degree D_H = 0.533) under gamma-ray irradiation, via one-step in situ reduction of Ag~+ and cross-linking of alcohol units. In the present approach, we try to control the speed of the cross-linking reaction of PVA chains (alcohol units), which are yielded from the hydrolysed PVKA, utilizing the low hydrolysis rate of the PVKA in dilute acidic solution.