PHOTOPOLYMERIZATION OF ACRYLAMIDE SENSITIZED BY WATER-SOLUBLE POLYMERISABLE PHOTOSENSITIZER N-METHACRYLYL-N''-PYRIMIDINOPIPERAZINE
一种水溶性可聚合敏化剂N－甲基丙烯酰－N＇－嘧啶哌嗪敏化的丙烯酰胺光聚合

The photopolymerization of acrylamide (AAm) was studied by using N-methacrylyl-N'-pyrimidinopip (MPMP) as sensitizer under UV irradiation.The photopolymerition rate of AAm in water with MPMP as sensitizer is proportional to 0.36th power of MPMP comcentration and 0.88th power of AAm concentration. The overall activation energy for the polymerization is determined to be 5.02Kcal/mol. A super-high MW (107) of PAAm are obtained. The MW is decreased with both the increasing of MPMP concentration and the raising of polymerizat-ion temperature,and inereased with the increase of AAm concentration. Fluoresce-nt analysis indicates that MPMP not only initiates the photopolymerization of vinyl monomers,but also enters into the polymer chains.