Bicontinuous Network Nanostructure with Tunable Thickness Formed on Asymmetric Triblock Terpolymer Thick FilmsClick to copy article linkArticle link copied!
- Karim Aissou*Karim Aissou*E-mail: [email protected]Institut Européen des Membranes, Université de Montpellier—CNRS—ENSCM, 300 Avenue du Professeur Emile Jeanbrau, F-34090 Montpellier, FranceMore by Karim Aissou
- Muhammad MumtazMuhammad MumtazLaboratoire de Chimie des Polymères Organiques, Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, FranceMore by Muhammad Mumtaz
- Hana BouzitHana BouzitInstitut Européen des Membranes, Université de Montpellier—CNRS—ENSCM, 300 Avenue du Professeur Emile Jeanbrau, F-34090 Montpellier, FranceMore by Hana Bouzit
- Gilles PécastaingsGilles PécastaingsLaboratoire de Chimie des Polymères Organiques, Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, FranceMore by Gilles Pécastaings
- Giuseppe PortaleGiuseppe PortaleMacromolecular Chemistry & New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, The NetherlandsMore by Giuseppe Portale
- Guillaume FleuryGuillaume FleuryLaboratoire de Chimie des Polymères Organiques, Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, FranceMore by Guillaume Fleury
- Georges HadziioannouGeorges HadziioannouLaboratoire de Chimie des Polymères Organiques, Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, FranceMore by Georges Hadziioannou
Abstract

Asymmetric poly(1,1-dimethyl silacyclobutane)-block-polystyrene-block-poly(2-vinyl pyridine) (PDMSB-b-PS-b-P2VP) thick films, consisting of a spongelike substructure topped by a nanostructured dense top layer, were produced by combining a fast self-assembly of the triblock terpolymer chains with nonsolvent-induced phase separation (referred as SNIPS). A controlled evolution of the thickness and morphology of the nanostructured top layer was achieved upon solvent vapor annealing (SVA). For instance, the sub-100 nm thick square array morphology generated by SNIPS is transformed into a 1.5 μm thick core–shell perforated lamellar (PL) structure when exposed to a chloroform (CHCl3) vapor for 3 h. A PL phase having highly ordered continuous P2VP nanochannels can be envisioned as an appealing morphology for membrane applications, since such a network structure formed on asymmetric PDMSB-b-PS-b-P2VP thick films obviates the need for alignment. Monoliths entirely composed of the bicontinuous PL structure were also produced by increasing the duration of the SVA treatment (18 h, CHCl3).
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