NMR MICROSCOPY OF POLYACRYLAMIDE HYDROGEL

Polyacrylamide Hydrogel (PAMG) is a kind of water-absorbing functional material, It has the ability of absorbing large amounts of water and releasing water under different conditions. So PAMG has an extensive b ackground of applications in many fields. It is an interesting problem to clarify the distribution and status of water in PAMG.(1) This pape r reports experiments in which the proton distribution and structures of networks in gamma-irradiation crosslinked PAMG samples have been sh own by using spin-echo single-slice imaging of nuclear magnetic resona nce microscopy. Copyright (C) 1996 Elsevier Science Inc.