Ultrafiltration membranes with a thin poly(styrene)- b -poly(isoprene) selective layer

Sarah E. Querelle; Elizabeth A. Jackson; Edward L. Cussler; Marc A. Hillmyer

doi:10.1021/am400847m

Ultrafiltration membranes with a thin poly(styrene)- b -poly(isoprene) selective layer

Sarah E. Querelle, Elizabeth A. Jackson, Edward L. Cussler, Marc A. Hillmyer

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Abstract

Ultrafiltration membranes with an 80 nm thick block polymer derived selective layer containing 20 nm cylindrical pores were prepared by removing poly(lactide) (PLA) from a poly(styrene)-b-poly(isoprene)-b-poly(lactide) (PS-PI-PLA) film onto a microporous polymer support. The block polymer film adopted a core(PLA)-shell(PI) cylindrical morphology in which vertically-oriented PLA cylinders were degraded to leave PI-lined channels in a PS matrix. Thanks to the combination of PS and PI in the nanoporous matrix, chemical cross-linking was not needed to provide mechanical stability in the thin film. The membranes showed a hydraulic flux of 165 L m^-2 h ^-1 bar^-1 and were able to size-discriminate poly(ethylene oxide) (PEO) solutes in agreement with theoretical predictions.

Original language	English (US)
Pages (from-to)	5044-5050
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	11
DOIs	https://doi.org/10.1021/am400847m
State	Published - Jun 12 2013

Keywords

composite membrane
self-assembly
size-selective rejection
triblock terpolymer
ultrafiltration
water treatment

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title = "Ultrafiltration membranes with a thin poly(styrene)- b -poly(isoprene) selective layer",

abstract = "Ultrafiltration membranes with an 80 nm thick block polymer derived selective layer containing 20 nm cylindrical pores were prepared by removing poly(lactide) (PLA) from a poly(styrene)-b-poly(isoprene)-b-poly(lactide) (PS-PI-PLA) film onto a microporous polymer support. The block polymer film adopted a core(PLA)-shell(PI) cylindrical morphology in which vertically-oriented PLA cylinders were degraded to leave PI-lined channels in a PS matrix. Thanks to the combination of PS and PI in the nanoporous matrix, chemical cross-linking was not needed to provide mechanical stability in the thin film. The membranes showed a hydraulic flux of 165 L m-2 h -1 bar-1 and were able to size-discriminate poly(ethylene oxide) (PEO) solutes in agreement with theoretical predictions.",

keywords = "composite membrane, self-assembly, size-selective rejection, triblock terpolymer, ultrafiltration, water treatment",

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AU - Querelle, Sarah E.

AU - Jackson, Elizabeth A.

AU - Cussler, Edward L.

AU - Hillmyer, Marc A.

PY - 2013/6/12

Y1 - 2013/6/12

N2 - Ultrafiltration membranes with an 80 nm thick block polymer derived selective layer containing 20 nm cylindrical pores were prepared by removing poly(lactide) (PLA) from a poly(styrene)-b-poly(isoprene)-b-poly(lactide) (PS-PI-PLA) film onto a microporous polymer support. The block polymer film adopted a core(PLA)-shell(PI) cylindrical morphology in which vertically-oriented PLA cylinders were degraded to leave PI-lined channels in a PS matrix. Thanks to the combination of PS and PI in the nanoporous matrix, chemical cross-linking was not needed to provide mechanical stability in the thin film. The membranes showed a hydraulic flux of 165 L m-2 h -1 bar-1 and were able to size-discriminate poly(ethylene oxide) (PEO) solutes in agreement with theoretical predictions.

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KW - size-selective rejection

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KW - ultrafiltration

KW - water treatment

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Ultrafiltration membranes with a thin poly(styrene)- b -poly(isoprene) selective layer

Abstract

Keywords

UN SDGs

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