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New Polyolefin Nanocomposites and Catalyst Supports Based on Organophilic Boehmites
Author(s) -
Xalter Rainer,
Halbach Tobias S.,
Mülhaupt Rolf
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200690048
Subject(s) - polyolefin , nanocomposite , metallocene , materials science , polymerization , post metallocene catalyst , catalysis , chemical engineering , boehmite , polymer chemistry , ethylene , polymer , organic chemistry , composite material , chemistry , aluminium , layer (electronics) , engineering
PE‐boehmite nanocomposites were prepared by means of metallocene‐catalyzed in situ polymerization of ethylene in presence of dispersed boehmites which were rendered organophilic by modification with organic acids. Polymerization activity, filler dispersion and mechanical properties of the nanocomposites were investigated as a function of type and concentration of the organophilic boehmites. Sulfonate modified boehmites were used as supports for MAO‐activated single site metallocene catalysts and nanocomposite formation via fragmentation of the self‐assembled nanoparticles and redispersion during polymerization.