Butadiene-isoprene copolymerization with V(acac)3-MAO. Crystalline and amorphous trans-1,4 copolymers
Abstract
Butadiene-isoprene copolymerization with the system V(acac)3-MAO was examined. Crystalline or amorphous copolymers were obtained depending on isoprene content. Both butadiene and isoprene units exhibit a trans-1,4 structure and are statistically distributed along the polymer chain. Polymer microstructure, comonomer composition, and distribution along the polymer chain were determined by 13C and 1H NMR analysis. The thermal and X-ray behaviors of the copolymers were also investigated and compared with results from solid-state 13C NMR experiments.
- Publication:
-
Journal of Polymer Science A Polymer Chemistry
- Pub Date:
- October 2007
- DOI:
- 10.1002/pola.22209
- Bibcode:
- 2007JPoSA..45.4635R