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Model block copolymers with complex architecture
Author(s) -
Hadjichristidis Nikos,
Poulos Yiannis,
Avgeropoulos Apostolus
Publication year - 1998
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19981320120
Subject(s) - copolymer , materials science , homogeneous , polystyrene , polymer chemistry , chlorosilane , star (game theory) , characterization (materials science) , small angle x ray scattering , polymerization , polymer science , scattering , nanotechnology , composite material , polymer , thermodynamics , physics , optics , silicon , astrophysics , metallurgy
The synthesis of non linear block copolymers of the type (BA) 2 B (3‐miktoarm star copolymer), (BA) 3 B (4‐miktoarm star copolymer), (BA) 3 B(AB) 3 (super H‐shaped), B 2 AB 2 (H‐shaped) and (B,A)A(B,A) (π‐shaped), where A is polyisoprene 1,4 and B is polystyrene was performed using anionic polymerization techniques and suitable chlorosilane chemistry. Characterization data showed that the samples are molecularly and compositionally homogeneous. TEM, SAXS and SANS were used to study the microphase behavior of the copolymers. For all samples, the results were analyzed in the frame of the theoretical predictions given by Milner and taking into account the results from previous studies on the A 2 B and A 3 B miktoarm star copolymers.