Perpendicular lamellae in parallel lamellae in a hierarchical CECEC-P hexablock terpolymer

Guillaume Fleury, Frank S. Bates

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


We describe the synthesis and phase behavior of a nearly monodisperse poly(cyclohexylethylene- b-ethylene-b-cyclohexylethylene-b-ethylene-b- cyclohexylethylene-b-ethylene-alt-propylene) (CECEC-P) hexablock terpolymer, synthesized by sequential anionic polymerization followed by catalytic hydrogenation. This multiblock copolymer, which contains equal volume fractions of P and compositionally symmetric CECEC, microphase separates through chemical incompatibility between C, E, and P and exhibits a complex morphology with two different length scales related to the local (C-E) and overall (C-E-P) sequences. We have identified a perpendicular lamellae in parallel lamellae mesostructure in the CECEC-P sample, where layers of rubbery P separate sheets of alternating layers of semicrystalline E and glassy C, arranged perpendicular to the larger overall lamellar structure.

Original languageEnglish (US)
Pages (from-to)1691-1694
Number of pages4
Issue number5
StatePublished - Mar 10 2009


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