摘要
本文研究了4,4′-偶氮二[4-氰基戊酰(对-二甲基氨基)苯胺](ACPDA)/过氧化二苯甲酰(BPO)氧化还原引发体系在N,N-二甲基甲酰胺(DMF)中引发甲基丙烯酸甲酯(MMA)的聚合及其动力学行为.考察了聚合反应温度、单体浓度、ACPDA浓度和BPO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.结果表明:在一定范围内,聚合反应速率随单体浓度、ACPDA浓度、BPO浓度的增加和反应温度的升高而加快;聚合物分子量随单体浓度的增大而增大,随ACPDA浓度、BPO浓度的增大和反应温度的升高而降低.该体系具有氧化还原引发体系的特点,其聚合速率方程为Rp=K[MMA]1.57[ACPDA]0.57[BPO]0.66,聚合反应的表观活化能Ea=38.06 kJ/mol.
The kinetics of Methyl Methacrylate（MMA） polymerization initiated by 4,4＇-azobis-（4-cyanopentanoyl（p-dimethylamino） anilide）（ACPDA） / dibenzoyl peroxide（BPO） redox system was studied in N,N-dimethyl formamide.The effects of concentrations of the monomer,ACPDA,BPO and the temperature on the polymerization rate were studied.The reaction order and the activation energy were determined.The results indicated that the polymerization rate increased with increasing the concentrations of monomer,ACPDA,BPO as well as the reaction temperature.The system possessed the characteristics of a redox initiation system.The equation of the polymerization rate is Rp = K[MMA]1.57[ACPDA]0.57[BPO]0.66 with an apparent activation energy of 38.06 kJ / mol for MMA Polymerization.
出处
《中央民族大学学报（自然科学版）》
2010年第4期5-10,共6页
Journal of Minzu University of China(Natural Sciences Edition)
基金
辽宁省科学技术基金资助项目(No.20061020)
