Abstract
ABSTRACTPolycarboxylic superplasticizers produced by polyether macromonomers have attracted widely attention recently. Polyether macromonomers can be divided into vinyl ether‐based and vinyl alcohol‐based macromonomers according to the starting agents (vinyl ether and vinyl alcohol, respectively). In this study, three vinyl ether‐based macromonomers were synthesized to compare with vinyl alcohol‐based macromonomers that commonly used at present. It was found that the three vinyl ether‐based macromonomers all can be copolymerized at lower reaction temperature (5 °C) and shorter reaction time (30–45 min) when the same reaction conversion ratio was achieved. To better explain the high activity of vinyl ether‐based macromonomers, the molecular structure of different polyether macromonomers was calculated. The results show that the electron cloud on the CC double bond of vinyl ether‐based macromonomers exhibits more obvious deflection because of the direct connection with the oxygen atom, which makes it more easily to copolymerize with acrylic acid. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48844.
Published Version
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