Triblock polymers for nanoporous membranes. | Zendy

Joseph Cordaro | Zendy; Nicolas Myllenbeck | Zendy; M. C. George | Zendy; Michael S. Kent | Zendy; Amalie L. Frischknecht | Zendy; Geoff L. Brennecka | Zendy; Greg O’Bryan | Zendy; Edward H. Feng | Zendy

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Triblock polymers for nanoporous membranes.

Author(s) -

Joseph Cordaro,

Nicolas Myllenbeck,

M. C. George,

Michael S. Kent,

Amalie L. Frischknecht,

Geoff L. Brennecka,

Greg O’Bryan,

Edward H. Feng

Publication year - 2012

Language(s) - English

Resource type - Reports

DOI - 10.2172/1055932

Subject(s) - nanoporous , polymer , copolymer , morphology (biology) , membrane , materials science , block (permutation group theory) , thin film , characterization (materials science) , polymer chemistry , polymer science , chemical engineering , nanotechnology , composite material , chemistry , mathematics , geometry , biochemistry , engineering , biology , genetics

The fabrication of nanoporous thin-film membranes from block polym ers is proposed. A computational modeling effort is described, which optimizes the polymer block lengths in order to obtain therm odynamically favorable phase-separated morphologies. Synthetic rout es to access po ly(ethylene oxide) and p oly (methyl methacrylate)-based block polymers are outlined. These materials were then prepared using controlled free rad ical polymerization. The relative adv antages and disadvantages of numerous routes are discus sed. Characterization of diand triblock polymers using nuclear m agnetic resonance spectroscopy and size-exclusion chromatograph revealed less than id eal re-initiation and cha in growth o f macroinitiators. Preliminary phase-behavior of these materials is reported from smallangle x-ray scattering and scanning electron microscopy.

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