摘要
以纤维素的有效溶剂离子液体为反应介质,过硫酸铵为引发剂,研究了纤维素与丙烯酰胺的均相接枝共聚反应动力学。通过实验考察了接枝反应速率与单体浓度、引发剂用量和反应温度的关系,得出实验条件下反应速率的表达式为:Rg=K[AM]1.0[APS]0.51,并测出反应过程的表观活化能Ea为28.749 kJ.
The kinetics of the homogeneous graft copolymerization of cellulose with acrylamide in ionic liquid was studied. The effects of monomer concentration, initiator dosage and reaction temperature on the polymerization rate were discussed. The results showed that the kinetics equation could be expressed by the following：Rg = K[ AM ]^1.0 [ APS ] ^0.51, The activation energy of the constant speed step was 28. 794 kJ · mol^- 1at 40 - 60℃.
出处
《造纸科学与技术》
北大核心
2009年第1期25-27,共3页
Paper Science & Technology
基金
国家自然科学基金(50203003)
中国博士后基金(20070410238)资助课题
关键词
纤维素
接枝共聚
离子液体
动力学
cellulose
graft copolymerization
ionic liquid
kinetics
