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Synthesis, Properties, And Degradation Of Polyisobutylene-Polyester Graft Copolymers, Bethany A. Turowec, Elizabeth R. Gillies
Synthesis, Properties, And Degradation Of Polyisobutylene-Polyester Graft Copolymers, Bethany A. Turowec, Elizabeth R. Gillies
Chemistry Publications
The development of copolymers is a promising approach for combining the favorable properties of two polymers and obtaining new properties of the combination. In this work, graft copolymers of polyisobutylene (PIB) and polycaprolactone (PCL) or poly(D,L-lactide) (PDLLA) were synthesized and studied. Amine terminated polyesters were synthesized and were grafted onto an activated PIB backbone synthesized from butyl rubber, a copolymer of isobutylene and 2 mol % isoprene. The polyester content was tuned from 15 to 44 wt % by varying the molar mass of the polyester blocks and the number of molar equivalents used in the grafting reaction. The graft …