Abstract
AbstractThe recent discovery of living cationic polymerization of alkenes has been followed up in three areas: 1) Demonstration of the validity of the DPn = [Mo]/[Io] relationship and the synthesis of high molecular weight polyisobutylenes Mn_>100 000) of narrow molecular weight distribution (Mw/Mn ≈︁1.1) 2) Discovery of electrophilic quenching and the use of this method for the preparation of allyl‐telechelic polyisobutylenes by quenching with trimethylallylsilane and 3) Synthesis of novel linear and three‐arm star radial thermoplastic elastomers comprising rubbery polyisobutylene central sequences connected to glassy polystyrene or a polystyrene derivative (i.e., p‐methylstyrene, p‐tert‐butylstyrene, indene) outer sequences. Some physical‐mechanical properties of these materials have been investigated.
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