Summary
Styrene and ethylene dimethacrylate were polymerized in benzene solutions to high conversions. Gels were prepared from critical concentrations of the divinylidene monomer and the fractions of the divinylidene units engaged in intermolecular crosslinks were estimated. The fractions were found to be very small, viz. 5, 10 and 18 % at the total monomer concentrations 1, 2 and 3 mol/dm3, respectively. Behaviour of pregel polymers suggests that cyclization of primary chains and multiple crosslinking are responsible for the low efficiency of the crosslinking agent.
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Galina, H., Rupicz, K. Cyclization in chain-crosslinking copolymerization. Polymer Bulletin 3, 473–480 (1980). https://doi.org/10.1007/BF00283823
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DOI: https://doi.org/10.1007/BF00283823