Summary:
Star-shaped polymers of isobutyl vinyl ether (IBVE) with a microgel core of an aliphatic divinyl ether (2) were synthesized in high yield on the basis of the living cationic polymerization with the HCl/ZnCl2 initiating system. GPC analysis demonstrated that linear coupling products ("two-armed" polymers) and three-armed star polymers formed during the early stages of the linking reaction, and that subsequent coupling reactions between such low molecular weight star polymers gave star-shaped polymers with more arms. The number of arms ranged from 5 to 22, which increased with increasing [2]0/[P*] ratio and/or shortening the arm chain.
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Received: 11 April 2000/Accepted: 24 April 2000
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Kanaoka, S., Hayase, N. & Higashimura, T. Synthesis of star-shaped poly(vinyl ether)s by living cationic polymerization: Pathway for formation of star-shaped polymers via polymer linking reactions. Polymer Bulletin 44, 485–492 (2000). https://doi.org/10.1007/s002890070069
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DOI: https://doi.org/10.1007/s002890070069