Synthesis and Polymerization Kinetics of PMMA in [BMIM]BF₆ Imidazolium Ionic Liquids

Abstract:

Polymerization of high molecular weight PMMA was achieved in [BMIPF₆ by contrasted in cyclohexane, toluene solvent at reaction temperature 60 C, 65C and 70 C, reaction time 60min. The data including the yield, molecular weight and molecular weight distribution of PMMA were analysized in 3 kind of solvent. The results showed that the weight average molecular weight of PMMA in [BMIPF₆ is up to 730000, respectively 7 and 10 times of molecular weight in cyclohexane and toluene. Secondly, the polymerization kinetics of PMMA in [BMIPF₆ were tested, the apparent chain propagation rate constant of PMMA are 10.7×10⁴12.9 ×10⁴ and 19.9×10⁴ in 60 C, 65C and 70 C. Compared with the growth rate constant in toluene, the polymerization rate constant PMMA in the ionic liquid increased by 5~10 times.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 411-414
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.411
• Online since: September 2013
• Authors: Pei Wang, Yuan Liu, Wen Su, Lian Liu
• Keywords: Molecular Weight and its Distribution, PMMA, Polymerization Kinetics, Room Temperature Ionic Liquids

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DOI: 10.1002/pola.22485