Polystyrene Chain Growth Initiated from Dialkylzinc for Synthesis of Polyolefin-Polystyrene Block Copolymers.

ABSTRACT: Polyolefins (POs) are the most abundant polymers. However, synthesis of PO-based block copolymers has only rarely been achieved. We aimed to synthesize various PO-based block copolymers by coordinative chain transfer polymerization (CCTP) followed by anionic polymerization in one-pot via conversion of the CCTP product (polyolefinyl)₂Zn to polyolefinyl-Li. The addition of 2 equiv t-BuLi to (1-octyl)₂Zn (a model compound of (polyolefinyl)₂Zn) and selective removal or decomposition of (tBu)₂Zn by evacuation or heating at 130 °C afforded 1-octyl-Li. Attempts to convert (polyolefinyl)₂Zn to polyolefinyl-Li were unsuccessful. However, polystyrene (PS) chains were efficiently grown from (polyolefinyl)₂Zn; the addition

SUBMITTER: Kim TJ 

PROVIDER: S-EPMC7182881 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature