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/10238/1289

Title: Water absorption and transport in bis-silane films.
Authors: Wang, YM
Wang, P
Kohls, D
Hamilton, WA
Schaefer, DW
Keywords: Neutron Reflectors
Corrosion Protection
Silanes
Silicon
Spectroscopy
Films
Issue Date: 7-Jan-2009
Publisher: Royal Society of Chemistry
Citation: Wang, Y. M., Wang, P., Kohls, D., Hamilton, W. A., & Schaefer, D. W. (2009). Water absorption and transport in bis-silane films. Physical Chemistry Chemical Physics, 11(1), 161-166.
Abstract: Water (D2O) ingress in bis-amino silane and bis-sulfur silane films was studied by in situ neutron reflectivity. Bis-amino silane film absorbs substantially more D2O (33 vol%) than the bis-sulfur silane film (4.6 vol%) at equilibrium. The volume increase (swelling) of both films, however, is much smaller than the total volume of D2O absorbed in the films. The results suggest that the absorbed water exists in two populations: one is dissolved in the polymer matrix (Henry's mode) while the other occupies unrelaxed free volume existing in the polymer (Langmuir mode). The dominance of Langmuir mode accounts for the small film thickness change during the water absorption. Dual-mode sorption is also consistent with the observed two-stage swelling process whereby an initial rapid increase in film thickness is followed by a slower process extending over 11 h. © 2009, Royal Society of Chemistry
URI: http://dx.doi.org/10.1039/b808741e
http://apo.ansto.gov.au/dspace/handle/10238/1289
ISSN: 1463-9076
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