Disordered Triblock Polymers for Nanoporous Materials with Tunable Surface Properties for Ultrafiltration Applications

Wui Yarn Chan; Marc A. Hillmyer

doi:10.1021/acsapm.2c00065

Disordered Triblock Polymers for Nanoporous Materials with Tunable Surface Properties for Ultrafiltration Applications

Wui Yarn Chan, Marc A. Hillmyer

Research output: Contribution to journal › Review article › peer-review

11 Scopus citations

Abstract

Triblock polymers trapped in the fluctuating disordered state were investigated as precursors to nanoporous ultrafiltration membranes. The triblock explored is poly(lactide)-b-poly(oligoethylene glycol methyl ether methacrylate)-b-poly(styrene-s-methyl methacrylate) (PLA-POEGMA-PSMMA), where PLA is the etchable pore-forming block, POEGMA is the hydrophilic pore-lining block, and PSMMA is the matrix block. Bicontinuous microphase-separated domains were obtained thermally by heating the polymer melt above the order-disorder transition temperature (T_ODT) followed by quenching below the glass transition temperature (T_g), or isothermally by spin coating the block polymer solution at ambient conditions. POEGMA is miscible with PLA but not PSMMA and should therefore colocalize with PLA and be exposed on pore surfaces after selective PLA etching. The triblock polymers have similar ODT behavior as diblock polymers, and the presence of an accessible T_ODTin the melt depends strongly on the segregation strength χ_PLA-PSMMAN. Composite membranes with block polymer selective layers were prepared by spin coating the triblock polymer onto water-filled nylon membranes, where rapid solvent evaporation enabled the block polymer to be vitrified in the disordered state. The resulting membranes have uniform surface pores, high permeabilities, and small improvements in surface hydrophilicity, and the approach may be applied to target other surface functionalities.

Original language	English (US)
Pages (from-to)	8009-8020
Number of pages	12
Journal	ACS Applied Polymer Materials
Volume	4
Issue number	11
DOIs	https://doi.org/10.1021/acsapm.2c00065
State	Published - Nov 11 2022

Bibliographical note

Funding Information:
Portions of this work were performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) located at the Sector 5 of the Advanced Photon Source (APS). DND-CAT is supported by E.I. DuPont de Nemours & Co., the Dow Chemical Company, and Northwestern University. Use of the APS, an Office of Science User Facility operated for the U.S. DOE Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under contract no. DE-AC02-06CH11357. The authors are extremely grateful to Steven Weigand for help with collecting SAXS data. SEM and microscopic contact angle data were collected at the UMN Characterization Facility, which receives partial support from NSF through the MRSEC program. The authors would like to thank Nicholas Hampu and Jay Werber for reviewing the manuscript.

Funding Information:
Funding for this work was provided by the National Science Foundation (DMR-2003454) and the University of Minnesota President’s Postdoctoral Fellowship Program.

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Keywords

bicontinuous
fluctuating disordered state
hydrophilic ultrafiltration membranes
selective etching
self-assembly
solution casting
triblock polymer

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@article{429522bea5c84027bed80cc9cdcac14e,

title = "Disordered Triblock Polymers for Nanoporous Materials with Tunable Surface Properties for Ultrafiltration Applications",

abstract = "Triblock polymers trapped in the fluctuating disordered state were investigated as precursors to nanoporous ultrafiltration membranes. The triblock explored is poly(lactide)-b-poly(oligoethylene glycol methyl ether methacrylate)-b-poly(styrene-s-methyl methacrylate) (PLA-POEGMA-PSMMA), where PLA is the etchable pore-forming block, POEGMA is the hydrophilic pore-lining block, and PSMMA is the matrix block. Bicontinuous microphase-separated domains were obtained thermally by heating the polymer melt above the order-disorder transition temperature (TODT) followed by quenching below the glass transition temperature (Tg), or isothermally by spin coating the block polymer solution at ambient conditions. POEGMA is miscible with PLA but not PSMMA and should therefore colocalize with PLA and be exposed on pore surfaces after selective PLA etching. The triblock polymers have similar ODT behavior as diblock polymers, and the presence of an accessible TODTin the melt depends strongly on the segregation strength χPLA-PSMMAN. Composite membranes with block polymer selective layers were prepared by spin coating the triblock polymer onto water-filled nylon membranes, where rapid solvent evaporation enabled the block polymer to be vitrified in the disordered state. The resulting membranes have uniform surface pores, high permeabilities, and small improvements in surface hydrophilicity, and the approach may be applied to target other surface functionalities.",

keywords = "bicontinuous, fluctuating disordered state, hydrophilic ultrafiltration membranes, selective etching, self-assembly, solution casting, triblock polymer",

author = "Chan, {Wui Yarn} and Hillmyer, {Marc A.}",

note = "Funding Information: Portions of this work were performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) located at the Sector 5 of the Advanced Photon Source (APS). DND-CAT is supported by E.I. DuPont de Nemours & Co., the Dow Chemical Company, and Northwestern University. Use of the APS, an Office of Science User Facility operated for the U.S. DOE Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under contract no. DE-AC02-06CH11357. The authors are extremely grateful to Steven Weigand for help with collecting SAXS data. SEM and microscopic contact angle data were collected at the UMN Characterization Facility, which receives partial support from NSF through the MRSEC program. The authors would like to thank Nicholas Hampu and Jay Werber for reviewing the manuscript. Funding Information: Funding for this work was provided by the National Science Foundation (DMR-2003454) and the University of Minnesota President{\textquoteright}s Postdoctoral Fellowship Program. Publisher Copyright: {\textcopyright} 2022 American Chemical Society. All rights reserved.",

year = "2022",

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doi = "10.1021/acsapm.2c00065",

language = "English (US)",

volume = "4",

pages = "8009--8020",

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T1 - Disordered Triblock Polymers for Nanoporous Materials with Tunable Surface Properties for Ultrafiltration Applications

AU - Chan, Wui Yarn

AU - Hillmyer, Marc A.

N1 - Funding Information: Portions of this work were performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) located at the Sector 5 of the Advanced Photon Source (APS). DND-CAT is supported by E.I. DuPont de Nemours & Co., the Dow Chemical Company, and Northwestern University. Use of the APS, an Office of Science User Facility operated for the U.S. DOE Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under contract no. DE-AC02-06CH11357. The authors are extremely grateful to Steven Weigand for help with collecting SAXS data. SEM and microscopic contact angle data were collected at the UMN Characterization Facility, which receives partial support from NSF through the MRSEC program. The authors would like to thank Nicholas Hampu and Jay Werber for reviewing the manuscript. Funding Information: Funding for this work was provided by the National Science Foundation (DMR-2003454) and the University of Minnesota President’s Postdoctoral Fellowship Program. Publisher Copyright: © 2022 American Chemical Society. All rights reserved.

PY - 2022/11/11

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N2 - Triblock polymers trapped in the fluctuating disordered state were investigated as precursors to nanoporous ultrafiltration membranes. The triblock explored is poly(lactide)-b-poly(oligoethylene glycol methyl ether methacrylate)-b-poly(styrene-s-methyl methacrylate) (PLA-POEGMA-PSMMA), where PLA is the etchable pore-forming block, POEGMA is the hydrophilic pore-lining block, and PSMMA is the matrix block. Bicontinuous microphase-separated domains were obtained thermally by heating the polymer melt above the order-disorder transition temperature (TODT) followed by quenching below the glass transition temperature (Tg), or isothermally by spin coating the block polymer solution at ambient conditions. POEGMA is miscible with PLA but not PSMMA and should therefore colocalize with PLA and be exposed on pore surfaces after selective PLA etching. The triblock polymers have similar ODT behavior as diblock polymers, and the presence of an accessible TODTin the melt depends strongly on the segregation strength χPLA-PSMMAN. Composite membranes with block polymer selective layers were prepared by spin coating the triblock polymer onto water-filled nylon membranes, where rapid solvent evaporation enabled the block polymer to be vitrified in the disordered state. The resulting membranes have uniform surface pores, high permeabilities, and small improvements in surface hydrophilicity, and the approach may be applied to target other surface functionalities.

AB - Triblock polymers trapped in the fluctuating disordered state were investigated as precursors to nanoporous ultrafiltration membranes. The triblock explored is poly(lactide)-b-poly(oligoethylene glycol methyl ether methacrylate)-b-poly(styrene-s-methyl methacrylate) (PLA-POEGMA-PSMMA), where PLA is the etchable pore-forming block, POEGMA is the hydrophilic pore-lining block, and PSMMA is the matrix block. Bicontinuous microphase-separated domains were obtained thermally by heating the polymer melt above the order-disorder transition temperature (TODT) followed by quenching below the glass transition temperature (Tg), or isothermally by spin coating the block polymer solution at ambient conditions. POEGMA is miscible with PLA but not PSMMA and should therefore colocalize with PLA and be exposed on pore surfaces after selective PLA etching. The triblock polymers have similar ODT behavior as diblock polymers, and the presence of an accessible TODTin the melt depends strongly on the segregation strength χPLA-PSMMAN. Composite membranes with block polymer selective layers were prepared by spin coating the triblock polymer onto water-filled nylon membranes, where rapid solvent evaporation enabled the block polymer to be vitrified in the disordered state. The resulting membranes have uniform surface pores, high permeabilities, and small improvements in surface hydrophilicity, and the approach may be applied to target other surface functionalities.

KW - bicontinuous

KW - fluctuating disordered state

KW - hydrophilic ultrafiltration membranes

KW - selective etching

KW - self-assembly

KW - solution casting

KW - triblock polymer

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EP - 8020

JO - ACS Applied Polymer Materials

JF - ACS Applied Polymer Materials

IS - 11

ER -

Disordered Triblock Polymers for Nanoporous Materials with Tunable Surface Properties for Ultrafiltration Applications

Abstract

Bibliographical note

Keywords

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Disordered Triblock Polymers for Nanoporous Materials with Tunable Surface Properties for Ultrafiltration Applications

Abstract

Bibliographical note

Keywords

MRSEC Support

Publisher link

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MRSEC Program (Period of DMR-2011401)

University of Minnesota Materials Research Science and Engineering Center (DMR-2011401)

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