Title

Mechanical and Viscoelastic Characterization of Hyperbranched Polyisobutylenes

Document Type

Article

Publication Date

11-2002

Abstract

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.

Publication Title

Rubber Chemistry and Technology

Volume

75

Issue

5

First Page

853

Last Page

864

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