Abstract
AbstractIsotactic poly(propylene)s bearing a terminal hydroxyl group (i‐PP‐t‐OH) with high degrees of end‐group functionality were synthesized by a metallocene/methylaluminoxane (MAO)‐mediated propylene polymerization process via a preferential aluminium chain transfer reaction assisted by a hydroalumination process at the end of polymerization. Despite the highly isotactic configuration and relatively high molecular weight ($\overline M _{\rm n}$ as high as 60 800 g · mol−1) of the polymers, the hydroxyl group located at the i‐PP chain terminal was efficiently transformed to an atom transfer radical polymerization (ATRP) initiator moiety of i‐PP‐t‐Br via a reaction with 2‐bromopropionyl chloride at 60 °C in toluene. Well‐defined i‐PP‐b‐PMMA and i‐PP‐b‐PS block copolymers of controllable structure and compositions were then prepared with efficient ATRPs of MMA and St using i‐PP‐t‐Br.magnified image
Published Version
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