Abstract
The stereoregularity of polystyrene obtained with lithium, sodium, potassium, rubidium, and cesium naphthalenes in the presence of cryptates without solvent was determined by 13C NMR spectroscopy. The effects of cryptates on the polymerization initiated with organolithium compounds were examined. The influence of polymerization temperature and the nature of the cation on the molecular weight, induction period, and stereoregularity of polystyrenes produced were also studied. The polystyrenes obtained were mostly syndiotactic and obeyed the Bernoullian statistics. Finally block copolymerization with isoprene and methyl methacrylate was studied.
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Raynal, S. Use of Cryptates in Bulk Anionic Polymerization of Styrene. Polym J 15, 585–590 (1983). https://doi.org/10.1295/polymj.15.585
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DOI: https://doi.org/10.1295/polymj.15.585