Synthesis and an Bulk Morphology of Styrene-Ferrocenylsilane-Methyl Methacrylate Tri- and Pentablock Copolymers

摘要

Systematic series of tri- and pentablock copolymers have been synthesized from styrene (S), [l]dimethylsilaferrocenophane (FS) and methyl methacrylate (MMA) via sequential anionic polymerization. In the first step of copolymer synthesis, mono-and dianionic PS, respectively, is generated. Direct grafting of FS follows. Then, 1,1-dimethylsilacyclobutane-mediated end-capping using diphenylethylene enabled us to graft the PMMA block(s) properly onto the living PFS chain termini. The obtained tri- and pentablock copolymers of various compositions were characterized with respect to their microphase behavior. The morphologies obtained as a function of copolymer composition and annealing conditions allow the conclusion that PS and PFS segregate only weakly while PMMA is highly incompatible with respect to PS and PFS.