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PBA–PMMA 3‐Arm Star Block Copolymer Thermoplastic Elastomers
Author(s) -
Dufour Bruno,
Koynov Kaloian,
Pakula Tadeusz,
Matyjaszewski Krzysztof
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800151
Subject(s) - copolymer , thermoplastic elastomer , materials science , elastomer , thermoplastic , composite material , methyl methacrylate , polymer chemistry , butyl acrylate , star (game theory) , block (permutation group theory) , ultimate tensile strength , acrylate , methacrylate , polymer , mathematical analysis , geometry , mathematics
A series of well‐defined poly(methyl methacrylate)‐ block ‐poly(butyl acrylate) 3‐arm star block copolymers have been synthesized by ATRP. The incorporation of polar hard segment of PMMA was made possible with the aid of halogen exchange technique. Phase‐separated morphology of cylindrical PMMA domains hexagonally arranged in the pBA matrix was observed by small angle X‐ray scattering in all studied materials. The mechanical and thermal properties of the PBA–PMMA 3‐arm star block copolymers have been thoroughly characterized and their thermoplastic elastomer behavior was studied. It was found that the tensile properties of these materials are comparable with those of their linear ABA type block copolymer counterparts with similar compositions.