Cobalt complex bearing β‐ketoamine ligand: syntheses,structure, catalytic behavior for styrene and methyl methacrylate polymerization |
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| Authors: | Gao Jie Bao Feng Chen Ying Chen Tao Ma Rui Liu Pan Han Xiaobing Lan Zhenzhen Ma Jianlan Yan Chunjie |
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| Institution: | 1. College of Chemistry, Central China Normal University, Wuhan, China;2. Engineering Research Center of Nano‐Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, China |
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| Abstract: | Cobalt complex based on β‐ketoamine ligand (Z)‐4‐((2,5‐dimethylphenylamino) (phenyl)methylene)‐3‐methyl‐1‐phenyl‐1H‐pyrazol‐5(4H)‐one] was successfully synthesized. The produced catalyst showed satisfactory activities in the cobalt‐mediated radical polymerization of styrene and methyl methacrylate with the common initiator of AIBN. The resulting polymerizations have the characteristics of living radical polymerization and displayed a nearly linear correlation between the number‐average molecular weight and monomer conversion. Low polydispersity was obtained for all polymerizations, and the polydispersity index decreased with the increase of conversion. These improvements facilitate the implementation of styrene and methacrylate cobalt‐mediated radical polymerization, and open the door to the scale‐up of the process. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | cobalt‐mediated radical polymerization styrene methyl methacrylate |
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