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AuthorLuo Y.
AuthorWang X.
AuthorZhang R.
AuthorSingh M.
AuthorAmmar A.
AuthorCousins D.
AuthorHassan M.K.
AuthorPonnamma D.
AuthorAdham S.
AuthorAl-Maadeed M.A.A.
AuthorKarim A.
Available date2022-02-27T09:30:33Z
Publication Date2020
Publication NameSoft Matter
ResourceScopus
Identifierhttp://dx.doi.org/10.1039/d0sm00526f
URIhttp://hdl.handle.net/10576/27452
AbstractThe separation of oil from water and filtration of aqueous solutions and dispersions are critical issues in the processing of waste and contaminated water treatment. Membrane-based technology has been proven as an effective method for the separation of oil from water. In this research, novel vertical nanopores membrane, via oriented cylindrical block copolymer (BCP) films, suitable for oil/water filtration has been designed, fabricated and tested. We used a ?100 nm thick model poly(styrene-block-methymethacrylate) (PS-b-PMMA) BCP as the active top nanofiltration layer, processed using a roll-to-roll (R2R) method of cold zone annealing (CZA) to obtain vertical orientation, followed by ultraviolet (UV) irradiation selective etch of PMMA cylinders to form vertically oriented nanopores as a novel feature compared to meandering nanopores in other reported BCP systems. The cylindrical nanochannels are hydrophilic, and have a uniform pore size (?23 nm), a narrow pore size distribution and a high nanopore density (?420 per sq. micron). The bottom supporting layer is a conventional microporous polyethersulfone (PES) membrane. The created asymmetric membrane is demonstrated to be effective for oil/water extraction with a modestly high throughput rate comparable to other RO/NF membranes. The molecular weight dependent filtration of a water soluble polymer, PEO, demonstrates the broader applications of such membranes.
SponsorThis publication is made possible by NPRP grant 10-0127-170269 from the Qatar National Research Fund (a member of Qatar Foundation). A. K. would like to acknowledge the funding support supported by the National Science Foundation (NSF) via Grant DMR-1905996. The statements made herein are solely the responsibility of the authors.
Languageen
PublisherRoyal Society of Chemistry
SubjectBlock copolymers
Membrane technology
Nanopores
Polymethyl methacrylates
Pore size
Styrene
Waste treatment
Water filtration
Water pollution
Water treatment
Block copolymer membranes
Membrane-based technology
Molecular weight dependent
Narrow pore size distributions
Polyethersulfone membrane
Separation of oil from water
Ultraviolet irradiations
Watersoluble polymers
Microfiltration
TitleVertically oriented nanoporous block copolymer membranes for oil/water separation and filtration
TypeArticle
Pagination9648-9654
Issue Number42
Volume Number16
dc.accessType Abstract Only


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