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Synthesis of Polybutadiene Nanocomposites: In situ Polymerization of 1,3‐Butadiene Catalyzed by Phyllosilicate Interlayer Spacing‐Confined Cobalt(II) Phosphine Complexes
Author(s) -
Leone Giuseppe,
Boglia Aldo,
Bertini Fabio,
Canetti Maurizio,
Ricci Giovanni
Publication year - 2009
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.200800577
Subject(s) - polybutadiene , phosphine , cobalt , polymerization , polymer chemistry , materials science , methylaluminoxane , tacticity , catalysis , silicate , nanocomposite , intercalation (chemistry) , polymer , chemical engineering , chemistry , composite material , inorganic chemistry , organic chemistry , copolymer , metallocene , metallurgy , engineering
Heterogeneous phyllosilicate interlayer spacing‐confined cobalt catalysts were prepared by reaction of cobalt phosphine complexes with methylaluminoxane‐modified clay. The catalytic systems obtained were used for the in situ polymerization of 1,3‐butadiene. The polymerization taking place within the silicate galleries separates the pristine layer aggregates, allowing for the design of polybutadiene‐based nanocomposites through the intercalation of the active polymerization centers. Depending on the type of cobalt complex used (i.e., type of phosphine bond to the metal) it is possible to control the microstructure (1,2 content) and the tacticity (percentage of rr , mr and mm triads) of the polymer growing directly in between the inorganic silicate host lamellae.