Free‐radical copolymerization kinetics of acrylonitrile and methyl acrylate in [BMIM]BF 4

作者：Da Li, Yumei Zhang, Huaping Wang, Jianzhong Tang, Biao Wang · 发表于：Journal of Applied Polymer Science · 年份：2006 · DOI：10.1002/app.24726 · 被引用次数：17 · 研究领域：Ionic liquids properties and applications、Carbon dioxide utilization in catalysis、Chemistry and Chemical Engineering

Abstract The copolymerization of acrylonitrile (AN) and methyl acrylate (MA) was carried out in ionic liquid [BMIM]BF 4 in the presence of azobisisobutyronitrile (AIBN) as an initiator to investigate the polymerization kinetic, including the copolymerization rate, reactivity ratios, and activation energy. The copolymerization rate equation was established according to the effect of initiator and monomer concentrations on the conversion. The copolymerization rate R p can be noted as $R_p = {\rm KC}_{\rm AIBN} {^{0.74}} C_{\rm MA} {^{0.61}} C_{\rm AN} {^{0.44}}$ , when the copolymerization was in the steady state. The apparent activation energy is 87.94 kJ/mol, while the value of that in the conventional organic solvent (DMF) is ∼ 81 kJ/mol. The reactivity ratios of the investigate system are r AN = 0.36 and r MA = 0.68. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4254–4257, 2006