Summary
In an anionic polymerization of 2-(trimethylsiloxy)ethyl methacrylate (Pro HEMA), the loading rate of the monomer was found to influence the polymerization. When the monomer loading was run quickly via a dropping funnel, the ProHEMA polymerization occurred quantitatively to form poly(ProHEMA) with a narrow molecular weight distribution (MWD). Based on the results, we propose a mechanism in which monomer molecules surrounding the propagating species take part, viz, the surrounding monomer molecules prevent a possible termination reaction. In the presence of LiC1 for ProHEMA polymerization, a polymer with a rather narrower MWD was obtained.
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Nagasaki, Y., Ito, H., Kato, M. et al. Stabilization of the living end in the anionic polymerization of 2-(trimethylsiloxy)ethyl methacrylate. Polymer Bulletin 35, 137–142 (1995). https://doi.org/10.1007/BF00312905
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DOI: https://doi.org/10.1007/BF00312905