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Precision Ethylene/Vinyl Bromide Polymers
Author(s) -
Boz Emine,
Nemeth Alexander J.,
Alamo Rufina G.,
Wagener Kenneth B.
Publication year - 2007
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.200600433
Subject(s) - bromine , vinyl bromide , chemistry , polymer , polymer chemistry , bromide , metathesis , ethylene , thermal analysis , chemical engineering , organic chemistry , polymerization , thermal , thermodynamics , catalysis , physics , engineering
Abstract Here we report the synthesis of precision ethylene/vinyl bromide (EV/B) polymers via metathesis chemistry followed by exhaustive hydrogenation. The polymer primary structures are supported by 1 H NMR, 13 C NMR, elemental analysis, TGA, and IR. Thermal analysis by DSC shows that a linear trend exists between increasing bromine content and decreasing melting temperature as bromine is incorporated (as a defect) in the crystalline lattice. In reference to the defect‐free chain, a change in phase structure causes a dramatic decrease in the observed heat of fusion and a smooth decrease within the Br series. This study describes the first family of precise EV/B polymers reported in the literature.