The O-52 network by molecular design: CECD tetrablock terpolymers

Michael J. Bluemle (1) , Guillaume Fleury (2, 3) , Timothy P. Lodge (1) , Frank S. Bates (1)

1 Univ Minnesota - Dept Chem Engn & Mat Sci
2 LCPO - Laboratoire de Chimie des Polymères Organiques
3 Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

Varying the length of poly(dimethylsiloxane) in poly(cyclohexylethylene-b-ethylene-b-cyclohexylethylene-b-dimethylsiloxane) (CECD) block terpolymers between 0 and 20% produces the sequence of ordered phases: cylindrical-to-network-to-cylindrical. Small-angle X-ray scattering and transmission electron microscopy demonstrate Pnna space group symmetry and a unique network morphology stabilized by the asymmetric molecular architecture and block interactions. These results establish a new design principle for the generation of triply periodic and multiply continuous nano-structured soft materials.

Mots clés: TRIBLOCK COPOLYMERS; BLOCK-COPOLYMERS; SOFT MATERIALS; MORPHOLOGY; MELTS; WEIGHT; PHASES

Domaines: Polymères

Michael J. Bluemle, Guillaume Fleury, Timothy P. Lodge, Frank S. Bates. The O-52 network by molecular design: CECD tetrablock terpolymers. Soft Matter, 2009, 5 (8), pp.1587-1590. ⟨10.1039/b902367d⟩. ⟨hal-00945190⟩