Hierarchically Porous Polymer Monoliths by Combining Controlled Macro- and Microphase Separation

Saba, Stacey A.; Mousavi, Maral S.; Bühlmann, Philippe; Hillmyer, Marc A.

doi:10.1021/jacs.5b04992

Hierarchically Porous Polymer Monoliths by Combining Controlled Macro- and Microphase Separation

Journal Article · Fri Jul 10 00:00:00 EDT 2015 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/jacs.5b04992· OSTI ID:1418571

Saba, Stacey A. ^[1]; Mousavi, Maral S. ^[2]; Bühlmann, Philippe ^[2]; Hillmyer, Marc A. ^[2]

Univ. of Minnesota, Minneapolis, MN (United States); DOE OSTI
Univ. of Minnesota, Minneapolis, MN (United States)

The ability to tune polymer monolith porosity on multiple length scales is desirable for applications in liquid separations, catalysis, and bioengineering. To this end, we have developed a facile synthetic route to nanoporous polymer monoliths based on controlled polymerization of styrene and divinylbenzene from a poly(lactide) macro-chain transfer agent in the presence of nonreactive poly(ethylene oxide) (PEO). Simple variations in the volume fraction and/or molar mass of PEO lead to either polymerization-induced microphase separation or simultaneous macro- and microphase separation. These processes dictate the resultant morphology and allow for control of the macro- and microstructure of the monoliths. Subsequent selective etching produces monoliths with morphologies that can be tailored from mesoporous, with control over mesopore size, to hierarchically meso- and macroporous, with percolating macropores. This convenient synthetic route to porous polymer monoliths has the potential to be useful in applications where both rapid mass transport and a high surface area are required.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Minnesota, Minneapolis, MN (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: W-31109-ENG-38

OSTI ID:: 1418571

Alternate ID(s):: OSTI ID: 1214869

Journal Information:: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 28 Vol. 137; ISSN 0002-7863

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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