Crosslinking of a partially brominated poly(butadiene-alt-propene) by reaction with zinc dust

✍ Scribed by Nilubol Kiattanavith; Maus Hummel; Ewald Hubmann

• Publisher: Elsevier Science
• Year: 1992
• Weight: 332 KB
• Volume: 18
• Category: Article
• ISSN: 0923-1137
• DOI: 10.1016/0923-1137(92)90257-3

✦ Synopsis

Poly(butadiene-alt-propene) was partially brominated with N-bromosuccinimide and then reacted with zinc dust. Results from elemental analysis showed that 17% of the repeating units of poly(butadiene-alt-propene) were brominated and 2% of these brominated repeating units remained in the copolymer after the crosslinking reaction with zinc dust. Metathesis degradation of crosslinked poly(butadiene-alt-propene) with (E)-4-0ctene was then carried out with the catalyst WCI6/(CH3)4Sn. Evidence of crosslinks in the polymer was provided by identification of the reaction products via GC/MS. Some hydrochlorination had taken place during metathesis degradation (by chlorine from WCI6). A quantitative evaluation of gas chromatograms with respect to the degree of crosslinking seems difficult because of the large number of different products attributable to crosslinks.