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Self‐Assembled Structures in Blends of Block Copolymer A‐ block ‐B with Homopolymer A: SAXS and SANS Study
Author(s) -
Holoubek Jaroslav,
Baldrian Josef,
Lednický František,
Málková Šárka,
Lal Jyotsana
Publication year - 2006
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.200600304
Subject(s) - copolymer , small angle x ray scattering , polystyrene , polymer chemistry , materials science , morphology (biology) , styrene , methyl methacrylate , block (permutation group theory) , lipid microdomain , methacrylate , phase (matter) , chemical engineering , polymer , composite material , chemistry , scattering , membrane , organic chemistry , optics , physics , biology , genetics , engineering , biochemistry , geometry , mathematics
Summary: The study describes the investigation of the microphase‐separated morphology of a block copolymer A‐ block ‐B with the parent homopolymer A, where A is polystyrene and A‐ block ‐B is poly(perdeuterated styrene)‐ block ‐poly(methyl methacrylate) ( d PS‐ block ‐PMMA). The microdomain morphology and phase behavior in blends of d PS‐ block ‐PMMA with polystyrene of $\overline M _{\rm w}$ = 8 000 and 35 000 were investigated. Binary blends of the diblock copolymer and homopolymers were prepared with various amounts of homopolymers. The criterion for “wet and dry brush” taking into account different solubilization of homopolymer has been applied to explain the changes in microdomain morphology during the self‐assembling process.