Living Polymerization by Bis(phenolate) Zirconium Catalysts: Synthesis of Isotactic Polystyrene‐ block ‐Polybutadiene Copolymers | Zendy

Hohberger Christiane | Zendy; Spaniol Thomas P. | Zendy; Okuda Jun | Zendy

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Living Polymerization by Bis(phenolate) Zirconium Catalysts: Synthesis of Isotactic Polystyrene‐ block ‐Polybutadiene Copolymers

Author(s) -

Hohberger Christiane,

Spaniol Thomas P.,

Okuda Jun

Publication year - 2014

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.201400169

Subject(s) - polybutadiene , copolymer , tacticity , polymer chemistry , polystyrene , zirconium , materials science , polymerization , styrene , polymer , catalysis , living polymerization , chemistry , radical polymerization , organic chemistry , composite material , metallurgy

A thermally robust zirconium catalyst containing a tetradentate bis(phenolate) ligand of the (OSSO)‐type polymerizes styrene and butadiene in living fashion. The activity follows the order Zr > Hf > Ti. Low polydispersities of the resulting isotactic polystyrenes (PD < 1.10) can be achieved at room temperature, while butadiene is polymerized at temperatures as high as 90 °C to give predominantly trans ‐1,4‐polymer. This allows efficient preparation of isotactic polystyrene‐ block ‐polybutadiene copolymers (iPS‐ b ‐PBD).

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