4,4′-偶氮二[4-氰基戊酰(对二甲基氨基)苯胺]引发丙烯酰胺聚合及其动力学研究

Study on the Kinetics of Acrylamide Polymerization Initiated by 4,4′-Azobis-[4-cyanopentanoyl(p-dimethylamino)anilide]

以N ,N 二甲基甲酰胺 (DMF)为溶剂 ,研究了 4,4′ 偶氮二 [4 氰基戊酰 (对 二甲基氨基 )苯胺 ](ACPDA)为引发剂引发丙烯酰胺 (AAM)的聚合行为。考察了聚合反应温度、单体浓度和引发剂浓度对聚合物分子量和聚合反应速率的影响 ,测定了反应级数和聚合反应的活化能。实验结果表明 ,ACPDA引发AAM的聚合速率方程为Rp=K[AAM]1.0 3 [ACPDA ]0 .48,聚合反应的表观活化能 (Ea)为 1 2 6.44kJ·mol-1。

The kinetics of acrylamide(AAM) polymerization initiated by 4,4′-azobis-[4-cyanopentanoyl(p-dimethylamino)anilide](ACPDA) was studied in N,N-dimethylformamide(DMF). The results indicate that the equation of the polymerization rate is as follows: R p=K[AAM] 1.03 [ACPDA] 0.48 and the activation energy of AAM polymerization is 126.44kJ·mol -1 . The initiation mechanism was proposed.