Synthesis and Polymerization Kinetics of PMMA in Imidazolium Ionic Liquids

Pei Wang; Yuan Liu; Wen Su; Lian Liu

doi:10.4028/www.scientific.net/AMM.423-426.528

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 423-426Synthesis and Polymerization Kinetics of PMMA in...

Synthesis and Polymerization Kinetics of PMMA in Imidazolium Ionic Liquids

Abstract:

Polymerization of high molecular weight PMMA was achieved in [BMIM]PF₄ at reaction temperature 60 ^o C, 65°C and 70 °C, reaction time 60min. The data including the yield, molecular weight and molecular weight distribution of PMMA were analysized. The results showed that the weight average molecular weight of PMMA in [BMIM]PF₄ is up to 275867, respectively 4 and 7 times of molecular weight in cyclohexane and toluene. Secondly, the polymerization kinetics of PMMA in [BMIM]PF₄ were tested, the apparent chain propagation rate constant of PMMA are 0.93×10⁴,1.11 ×10⁴ and 14.1×10⁴ in 60 °C, 65°C and 70 °C. Compared with the growth rate constant in toluene, the polymerization rate constant PMMA in the ionic liquid increased by 4~7 times.