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研究了N,N-二甲基对甲苯胺(DMT)为引发剂时丙烯酰胺(AM)的光聚合。聚合速率与AM、DMT浓度的关系为: R_p∞[DMT]~(0.35)[AM]~(1.34)(水为溶剂) R_p∞[DMT]~(0.33)[AM]~(1.32)(二甲亚砜为溶剂)二甲亚砜为溶剂时,光聚合表观活化能为4.62千卡/克分子。 从光照下DMT与AM形成激发态电荷转移复合物的机制初步讨论了引发机理。
The photopolymerization of acrylamide (AM) with N, N-dimethyl-p-toluidine (DMT) as initiator was studied. The relationship between the polymerization rate and the concentration of AM and DMT is: R_p∞ [DMT] ~ (0.35) [AM] ~ (1.34) (water as solvent) R_p∞ [DMT] ~ (0.33) [AM] ~ (1.32) DMSO as solvent) dimethylsulfoxide as a solvent, the apparent activation energy of photopolymerization was 4.62 kcal / mol. The mechanism of initiation is discussed primarily from the mechanism of formation of excited state charge-transfer complexes between DMT and AM under illumination.