Ionic Liquids As Self-Assembly Guide for the Formation of Nanostructured Block Copolymer Membranes
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ArticleAuthors
Madhavan, Poornima
Sougrat, Rachid

Behzad, Ali Reza
Peinemann, Klaus-Viktor

Nunes, Suzana Pereira

KAUST Department
Advanced Membranes and Porous Materials Research CenterAdvanced Nanofabrication, Imaging and Characterization Core Lab
Biological and Environmental Sciences and Engineering (BESE) Division
Chemical Engineering Program
Electron Microscopy
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)
Date
2015-05-02Online Publication Date
2015-05-02Print Publication Date
2015-10Permanent link to this record
http://hdl.handle.net/10754/552119
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Nanostructured block copolymer membranes were manufactured by water induced phase inversion, using ionic liquids (ILs) as cosolvents. The effect of ionic liquids on the morphology was investigated, by using polystyrene-b-poly(4-vinyl pyridine) (PS-b-PV4P) diblock as membrane copolymer matrix and imidazolium and pyridinium based ILs. The effect of IL concentration and chemical composition was evident with particular interaction with P4VP blocks. The order of block copolymer/ILs solutions previous to the membrane casting was confirmed by cryo scanning electron microscopy and the morphologies of the manufactured nanostructured membranes were characterized by transmission and scanning electron microscopy. Non-protic ionic liquids facilitate the formation of hexagonal nanoporous block copolymer structure, while protic ILs led to a lamella-structured membrane. The rheology of the IL/block copolymer solutions was investigated, evaluating the storage and loss moduli. Most membranes prepared with ionic liquid had higher water flux than pure block copolymer membranes without additives.Citation
Ionic Liquids As Self-Assembly Guide for the Formation of Nanostructured Block Copolymer Membranes 2015 Journal of Membrane SciencePublisher
Elsevier BVJournal
Journal of Membrane ScienceAdditional Links
http://linkinghub.elsevier.com/retrieve/pii/S0376738815003671ae974a485f413a2113503eed53cd6c53
10.1016/j.memsci.2015.04.036