New polyisobutylene based model ionomers |
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| Authors: | Yousef Mohajer Dinesh Tyagi Garth L Wilkes Robson F Storey Joseph P Kennedy |
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| Affiliation: | (1) Department of Chemical Engineering, Virginia Polytechnic Institute and State University, 24061-6496 Blacksburg, VA, USA;(2) Institute of Polymer Science, The University of Akron, 44325 Akron, OH, USA |
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| Abstract: | Three-arm star polyisobutylene ionomers (¯Mn=8800) with terminal  SO3
 M (M=K or Ca2) groups were synthesized and their mechanical properties investigated. Compression molded films displayed high elongations, i.e., -1000% for Ca2 ionomers with lower values for the K counterions. Strain induced crystallinity was observed at higher elongations. Mechanical properties in general compared favorably with conventional covalently linked rubbery networks and were comparable and in some cases superior to EPDM-based ionomers carrying randomly distributed SO3
M groups.For the first two parts see Proceedings, 28th IUPAC Macromolecular Symposium, Amherst, MA, July 11–16, 1982, p. 905 and 906 |
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