Tuning Structure and Properties of Graded Triblock Terpolymer-Based Mesoporous and Hybrid Films
Type
ArticleAuthors
Phillip, William A.Mika Dorin, Rachel
Werner, Jörg
Hoek, Eric M. V.
Wiesner, Ulrich
Elimelech, Menachem
KAUST Grant Number
KUS-C1-018-02Date
2011-07-13Permanent link to this record
http://hdl.handle.net/10754/600093
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Despite considerable efforts toward fabricating ordered, water-permeable, mesoporous films from block copolymers, fine control over pore dimensions, structural characteristics, and mechanical behavior of graded structures remains a major challenge. To this end, we describe the fabrication and performance characteristics of graded mesoporous and hybrid films derived from the newly synthesized triblock terpolymer, poly(isoprene-b-styrene-b-4-vinylpyridine). A unique morphology, unachievable in diblock copolymer systems, with enhanced mechanical integrity is evidenced. The film structure comprises a thin selective layer containing vertically aligned and nearly monodisperse mesopores at a density of more than 1014 per m2 above a graded macroporous layer. Hybridization via homopolymer blending enables tuning of pore size within the range of 16 to 30 nm. Solvent flow and solute separation experiments demonstrate that the terpolymer films have permeabilities comparable to commercial membranes, are stimuli-responsive, and contain pores with a nearly monodisperse diameter. These results suggest that moving to multiblock polymers and their hybrids may open new paths to produce high-performance graded membranes for filtration, separations, nanofluidics, catalysis, and drug delivery. © 2011 American Chemical Society.Citation
Phillip WA, Mika Dorin R, Werner J, Hoek EMV, Wiesner U, et al. (2011) Tuning Structure and Properties of Graded Triblock Terpolymer-Based Mesoporous and Hybrid Films. Nano Lett 11: 2892–2900. Available: http://dx.doi.org/10.1021/nl2013554.Sponsors
This publication is based on work supported by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). R.M.D. acknowledges support from the NSF Graduate Research Fellowship Program (GRFP).Publisher
American Chemical Society (ACS)Journal
Nano LettersPubMed ID
21648394ae974a485f413a2113503eed53cd6c53
10.1021/nl2013554
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