Yanjarappa, Mallinamadugu J. ; Sivaram, Swaminathan (2004) A study of copolymerization of 1-hexene with 2,5-norbornadiene using metallocene catalysts Macromolecular Chemistry and Physics, 205 (15). pp. 2055-2063. ISSN 1022-1352
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/macp.20...
Related URL: http://dx.doi.org/10.1002/macp.200400209
Abstract
Copolymerization of 1-hexene with a symmetrical diene, namely 2,5-norbornadiene was studied using four different metallocene catalysts. Copolymerization was found to occur exclusively through one of the two equally reactive endocyclic double bonds with all the four catalysts. Copolymerization results in low molecular weight oligomers with the number average molecular weight (M̅n) varying from 1000-3000. End group analysis of the co-oligomers revealed that the β-hydrogen transfer after 2,1 insertion also occurs in the presence of highly regiospecific catalysts. The regio errors were also found to depend on various reaction parameters such as polymerization time, Al/Zr mol ratio, metallocene concentration and polymerization temperature.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Chain Transfer Reactions; Copolymerization; End Groups; Metallocene Catalysts; Regio Errors |
| ID Code: | 51657 |
| Deposited On: | 29 Jul 2011 04:24 |
| Last Modified: | 29 Jul 2011 04:24 |
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