Premium
Properties of block and graft copolymers of polybutadiene with small complexed poly(4‐vinylpyridine) segments
Author(s) -
Janah Hakim,
Favier JeanClaude,
Sigwalt Pierre,
Jačovič Mihaïlo S.
Publication year - 1992
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1992.220030106
Subject(s) - copolymer , polybutadiene , materials science , elastomer , polymer chemistry , ionomer , modulus , block (permutation group theory) , polymer science , chemical engineering , composite material , polymer , geometry , mathematics , engineering
Various diblocks, triblocks and a graft copolymer of butadiene with 4‐vinylpyridine short blocks have been prepared. They were complexed with ZnCl 2 to give ionomer‐like materials. For all copolymers, the T g of the elastomeric block (−84°C to −91°C) was unchanged by complexation. For all diblocks and triblocks with short blocks ( DP n ∼ 3) the storage modulus was only slightly increased by comparison with uncomplexed materials. For the graft copolymer even with short blocks the material is less sensitive to temperature after complexation. For triblocks, when the DP n of the vinylpyridine blocks was high enough (15 units), complexes were associated in multiplets of large size and the elastomeric properties were retained up to 200°C.