Semi-crystalline linear multiblock polyolefin compatibilizers exhibit reinforcement of polymer interfaces with superior efficiencies (1 wt.% and less) than similar diblock or graft architectures (~5–10 wt.%). This work describes the synthetic methodology of preparing semi-crystalline multiblock copolymers of iPP and LLDPE, a composition which has not be accessed with existing methods. Advances in the synthesis of telechelic polypropylene and ADMET block copolymerization will be described. The resulting compatibilizers are studied in reinforcing the interfaces between iPP with HDPE and LLDPE. Characterization of the multiblocks using NMR, WAXS, TEM, SEM and solid-state NMR provide insights into the multiblock morphologies and microstructures.

Multiblock polyolefin compatibilizers from a non-living metathesis shuffling method

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