Photoinitiated dispersion polymerization of acrylamide (AM) has been carried out in the media of aqueous tert-butyl alcohol (TBA) (TBA=50 vol％～80 vol％)

using poly (acrylic acid)-graft-nonylphenoxypoly-(ethylene oxide)(PAA-g-NPEO) as a dispersant and 2

2-dimethoxy-2-phenylacetophenone as initiator．The evolution of the dispersion polymerization indicated that there was no induction period and a 90％ conversion could be obtained in 40 min．Influences of various parameters

such as medium polarity

monomer concentration

initiator concentration

dispersant concentration

incident light intensity

reaction temperature and layer thickness on molecular weight and particle size were investigated Polymers of high molecular weight

up to 6.5×106 were obtained According to the observation of TEM

most of the polymer particles clustered together or scattered with a unifoml size as in a typical dispersion polymerization system．