ANSTO Publications Online >
Journal Publications >
Journal Articles >

Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/3169

Title: Inorganic modification of block copolymer for medium temperature proton exchange membrane application.
Authors: Mistry, MK
Choudhury, NR
Dutta, NK
Knott, R
Keywords: Membranes
Hybridization
Scanning Electron Microscopy
Inorganic Compounds
Swelling
Copolymers
Issue Date: 1-Apr-2010
Publisher: Elsevier
Citation: Mistry, M. K., Choudhury, N. R., Dutta, N. K., & Knott, R. (2010). Inorganic modification of block copolymer for medium temperature proton exchange membrane application. Journal of Membrane Science, 351(1-2), 168-177.
Abstract: New hybrid membranes have been developed via sol–gel chemistry and solvent directed infiltration method using novel inorganic precursors and sulfonated poly(styrene-b-[ethylene-co-butylene]-b-styrene) (S-SEBS). S-SEBS shows a distinct phase separated morphology which can be used as a structure directing template to drive the inorganic component within the ionic domains of the polymer. Photoacoustic Fourier transform infrared spectroscopy (PA-FTIR) confirms the formation of Si–O–Si and Si–O–P bridges in hybrid membranes which indicate a silicate or phosphosilicate network structure within the hybrid membranes. The presence of the inorganic network within the hybrid membranes improves their thermal stability, viscoelastic properties and water retention at elevated temperatures above 100°C. Scanning electron microscopy (SEM) results show a uniform distribution of the inorganic component within the hybrid membranes and confirm successful incorporation of inorganic particles within S-SEBS membranes. Conductivity of S-SEBS starts to decrease after 60°C due to excessive swelling whereas hybrid membranes show an increase in conductivity after 60°C as the inorganic component reduces excessive swelling in hybrid membranes. SAXS results indicate that S-SEBS has distinct phase separated morphology and show hybrid membranes exhibit a lamellar morphology. © 2010, Elsevier Ltd.
URI: http://dx.doi.org/10.1016/j.memsci.2010.01.044
http://apo.ansto.gov.au/dspace/handle/10238/3169
ISSN: 0376-7388
Appears in Collections:Journal Articles

Files in This Item:

There are no files associated with this item.

Items in APO are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback