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Synthesis and morphology of ABC heteroarm star terpolymers of polystyrene, polybutadiene and poly(2‐vinylpyridine)
Author(s) -
Hückstädt Hanno,
Göpfert Astrid,
Abetz Volker
Publication year - 2000
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/(sici)1521-3935(20000201)201:3<296::aid-macp296>3.0.co;2-u
Subject(s) - polybutadiene , lamella (surface anatomy) , polystyrene , small angle x ray scattering , materials science , polymer chemistry , copolymer , polymer , tetragonal crystal system , morphology (biology) , transmission electron microscopy , crystallography , scattering , polymer science , composite material , chemistry , nanotechnology , crystal structure , optics , physics , biology , genetics
Three series of ABC heteroarm star terpolymers with arms of polystyrene (S), polybutadiene (B) and poly(2‐vinylpyridine) (V) were synthesized anionically using non‐homopolymerizable macromonomers functionalized with a terminal 1,1‐diphenylethylene unit. Ultrathin samples from solution cast films were stained with OsO 4 , CH 3 I or I 2 and studied by transmission electron microscopy (TEM). The morphologies found include dense packings of cylinders with tetragonal or distorted hexagonal order, two hexagonal morphologies with V cylinders surrounded by six B and six S cylinders, where S and V switch places depending on the polymer composition, lamellae of V and S with B cylinders in the S lamella and smooth lamellae of all components. Some polymers were also characterized by small angle X‐ray scattering (SAXS).