Switchable pH-responsive polymeric membranes prepared via block copolymer micelle assembly
AuthorsNunes, Suzana Pereira
Behzad, Ali Reza
KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Advanced Nanofabrication, Imaging and Characterization Core Lab
Biological and Environmental Sciences and Engineering (BESE) Division
Chemical Engineering Program
Environmental Science and Engineering Program
Imaging and Characterization Core Lab
Nanostructured Polymeric Membrane Lab
Physical Science and Engineering (PSE) Division
Water Desalination and Reuse Research Center (WDRC)
Online Publication Date2011-04-25
Print Publication Date2011-05-24
Permanent link to this recordhttp://hdl.handle.net/10754/561780
MetadataShow full item record
AbstractA process is described to manufacture monodisperse asymmetric pH-responsive nanochannels with very high densities (pore density >2 × 10 14 pores per m2), reproducible in m2 scale. Cylindric pores with diameters in the sub-10 nm range and lengths in the 400 nm range were formed by self-assembly of metal-block copolymer complexes and nonsolvent-induced phase separation. The film morphology was tailored by taking into account the stability constants for a series of metal-polymer complexes and confirmed by AFM. The distribution of metal-copolymer micelles was imaged by transmission electron microscopy tomography. The pH response of the polymer nanochannels is the strongest reported with synthetic pores in the nm range (reversible flux increase of more than 2 orders of magnitude when switching the pH from 2 to 8) and could be demonstrated by cryo-field emission scanning electron microscopy, SAXS, and ultra/nanofiltration experiments. © 2011 American Chemical Society.
PublisherAmerican Chemical Society (ACS)
CollectionsArticles; Biological and Environmental Sciences and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Environmental Science and Engineering Program; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Water Desalination and Reuse Research Center (WDRC)
- Highly ordered nanostructured surfaces obtained with silica-filled diblock-copolymer micelles as templates.
- Authors: Frömsdorf A, Kornowski A, Pütter S, Stillrich H, Lee LT
- Issue date: 2007 May
- Fabrication of ordered anodic aluminum oxide using a solvent-induced array of block-copolymer micelles.
- Authors: Kim B, Park S, McCarthy TJ, Russell TP
- Issue date: 2007 Nov
- Controlling polymersome surface topology at the nanoscale by membrane confined polymer/polymer phase separation.
- Authors: LoPresti C, Massignani M, Fernyhough C, Blanazs A, Ryan AJ, Madsen J, Warren NJ, Armes SP, Lewis AL, Chirasatitsin S, Engler AJ, Battaglia G
- Issue date: 2011 Mar 22
- Laterally nanostructured vesicles, polygonal bilayer sheets, and segmented wormlike micelles.
- Authors: Li Z, Hillmyer MA, Lodge TP
- Issue date: 2006 Jun
- Polymeric nanopore membranes for hydrophobicity-based separations by conformal initiated chemical vapor deposition.
- Authors: Asatekin A, Gleason KK
- Issue date: 2011 Feb 9