Summary
Analysis of experimental results on the chain (co) polymerization of bisunsaturated monomers suggests that cyclization plays a decisive role already at the onset of the reaction. At medium and elevated concentrations of the bisunsaturated compound, compact microgel-like particles are formed, which give rise to a gel mainly by participating in the polymerization reaction only with pendant double bonds in their surface layer, and not with double bonds in the interior. This mechanism is reflected in an apparent decrease in reactivity of the pendant double bonds.
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Dušek, K., Galina, H. & Mikeš, J. Features of network formation in the chain crosslinking (co)polymerization. Polymer Bulletin 3, 19–25 (1980). https://doi.org/10.1007/BF00263201
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DOI: https://doi.org/10.1007/BF00263201