Mechanical and Viscoelastic Characterization of Hyperbranched Polyisobutylenes
Structure-property relationships were investigated in hyperbranched polyisobutylenes, in comparison with commercial linear butyl rubber. The gel-free, soluble hyperbranched polyisobutylenes, synthesized by living carbocationic polymerization, had molecular weights, Mw≈400,000 to 1,000,000 g/mol, molecular weight distributions, MWD ≈1.2 to 2.6, and branching frequencies, BR ≈ 4 to 60. The mechanical and viscoelastic characterization of these polymers revealed interesting properties, including the characteristics of crosslinked rubbers.
Rubber Chemistry and Technology
Puskas, Judit; Paulo, Christophe; and Altstädt, Volker, "Mechanical and Viscoelastic Characterization of Hyperbranched Polyisobutylenes" (2002). Chemical and Biomolecular Engineering Faculty Research. 532.