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Direct evidence of crosslinks by metathesis degradation
Author(s) -
Hummel Klaus,
Hubmann Ewald
Publication year - 1990
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19900400114
Subject(s) - propene , degradation (telecommunications) , metathesis , olefin metathesis , chemistry , salt metathesis reaction , catalysis , mass spectrometry , organic chemistry , polymer , gas chromatography , polymer chemistry , olefin fiber , chromatography , polymerization , telecommunications , computer science
The degradation of unsaturated polymers by olefin metathesis has already been applied to the investigation of crosslink structures. In the present paper, crosslinks in poly(butadiene‐alt‐propene), obtained by partial bromination with N‐bromosuccinimide and reaction with 1,4‐bis(bromomagnesium)butane, were investigated by this method. Metathesis degradation was carried out with (E)‐4‐octene using the catalyst WCl 6 ‐Sn(CH 3 ) 4 . The low‐molecular‐weight products were identified by combination of gas chromatography (GC) and mass spectrometry (MS).