Manufacturing supported loose-nanofiltration polymeric membranes with eco-friendly solvents on an R2R System

David Lu; Kwangjun Jung; Ju Young Shim; Tequila A.L. Harris; Isabel C. Escobar

doi:10.1038/s41545-024-00319-4

Manufacturing supported loose-nanofiltration polymeric membranes with eco-friendly solvents on an R2R System

David Lu, Kwangjun Jung, Ju Young Shim, Tequila A.L. Harris, Isabel C. Escobar

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In this study, loose nanofiltration membranes made of polysulfone dissolved in co-solvents PolarClean and gamma-Valerolactone were prepared via slot die coating (SDC) on a roll-to-roll (R2R) system by directly coating them onto a support layer or free standing. A solution flow rate of 20 mL/min, substrate speed of 17.1 mm/s, and coating gap of 0.1 mm resulted in the formation of membranes without structural defects. Pre-wetting the support layer with dope solution minimized shrinkage of membrane layer thickness and improved interfacial adhesion. Membrane samples produced using SDC exhibited properties and performance consistent with bench-scale doctor blade extruded samples; pre-wetted and uncompressed samples (SDC-3) exhibited the highest rejection of bovine serum albumin (99.20% ± 1.31%) and along with adequate mean permeability during filtration (70.5 ± 8.33 LMH/bar). This study shows that combining sustainable materials development with SDC provides a holistic approach to membrane separations to bridge materials discovery and membrane formation.

Original language	English
Article number	24
Journal	npj Clean Water
Volume	7
Issue number	1
DOIs	https://doi.org/10.1038/s41545-024-00319-4
State	Published - Dec 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

ASJC Scopus subject areas

Water Science and Technology
Waste Management and Disposal
Pollution
Management, Monitoring, Policy and Law

Access to Document

10.1038/s41545-024-00319-4

Cite this

@article{76f1037fb09d41da9841b5945e2a2181,

title = "Manufacturing supported loose-nanofiltration polymeric membranes with eco-friendly solvents on an R2R System",

abstract = "In this study, loose nanofiltration membranes made of polysulfone dissolved in co-solvents PolarClean and gamma-Valerolactone were prepared via slot die coating (SDC) on a roll-to-roll (R2R) system by directly coating them onto a support layer or free standing. A solution flow rate of 20 mL/min, substrate speed of 17.1 mm/s, and coating gap of 0.1 mm resulted in the formation of membranes without structural defects. Pre-wetting the support layer with dope solution minimized shrinkage of membrane layer thickness and improved interfacial adhesion. Membrane samples produced using SDC exhibited properties and performance consistent with bench-scale doctor blade extruded samples; pre-wetted and uncompressed samples (SDC-3) exhibited the highest rejection of bovine serum albumin (99.20% ± 1.31%) and along with adequate mean permeability during filtration (70.5 ± 8.33 LMH/bar). This study shows that combining sustainable materials development with SDC provides a holistic approach to membrane separations to bridge materials discovery and membrane formation.",

author = "David Lu and Kwangjun Jung and Shim, {Ju Young} and Harris, {Tequila A.L.} and Escobar, {Isabel C.}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = dec,

doi = "10.1038/s41545-024-00319-4",

language = "English",

volume = "7",

journal = "npj Clean Water",

issn = "2059-7037",

publisher = "Springer Nature",

number = "1",

}

TY - JOUR

T1 - Manufacturing supported loose-nanofiltration polymeric membranes with eco-friendly solvents on an R2R System

AU - Lu, David

AU - Jung, Kwangjun

AU - Shim, Ju Young

AU - Harris, Tequila A.L.

AU - Escobar, Isabel C.

PY - 2024/12

Y1 - 2024/12

N2 - In this study, loose nanofiltration membranes made of polysulfone dissolved in co-solvents PolarClean and gamma-Valerolactone were prepared via slot die coating (SDC) on a roll-to-roll (R2R) system by directly coating them onto a support layer or free standing. A solution flow rate of 20 mL/min, substrate speed of 17.1 mm/s, and coating gap of 0.1 mm resulted in the formation of membranes without structural defects. Pre-wetting the support layer with dope solution minimized shrinkage of membrane layer thickness and improved interfacial adhesion. Membrane samples produced using SDC exhibited properties and performance consistent with bench-scale doctor blade extruded samples; pre-wetted and uncompressed samples (SDC-3) exhibited the highest rejection of bovine serum albumin (99.20% ± 1.31%) and along with adequate mean permeability during filtration (70.5 ± 8.33 LMH/bar). This study shows that combining sustainable materials development with SDC provides a holistic approach to membrane separations to bridge materials discovery and membrane formation.

AB - In this study, loose nanofiltration membranes made of polysulfone dissolved in co-solvents PolarClean and gamma-Valerolactone were prepared via slot die coating (SDC) on a roll-to-roll (R2R) system by directly coating them onto a support layer or free standing. A solution flow rate of 20 mL/min, substrate speed of 17.1 mm/s, and coating gap of 0.1 mm resulted in the formation of membranes without structural defects. Pre-wetting the support layer with dope solution minimized shrinkage of membrane layer thickness and improved interfacial adhesion. Membrane samples produced using SDC exhibited properties and performance consistent with bench-scale doctor blade extruded samples; pre-wetted and uncompressed samples (SDC-3) exhibited the highest rejection of bovine serum albumin (99.20% ± 1.31%) and along with adequate mean permeability during filtration (70.5 ± 8.33 LMH/bar). This study shows that combining sustainable materials development with SDC provides a holistic approach to membrane separations to bridge materials discovery and membrane formation.

UR - http://www.scopus.com/inward/record.url?scp=85188860935&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85188860935&partnerID=8YFLogxK

U2 - 10.1038/s41545-024-00319-4

DO - 10.1038/s41545-024-00319-4

M3 - Article

AN - SCOPUS:85188860935

SN - 2059-7037

VL - 7

JO - npj Clean Water

JF - npj Clean Water

IS - 1

M1 - 24

ER -

Manufacturing supported loose-nanofiltration polymeric membranes with eco-friendly solvents on an R2R System

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this