Halse, M.R. and Rahman, H.J. and Strange, John H. (1994) A Study of the Difusion of Decane into Light Cross-Linked Natural-Ruber by Broad-Line MRI. Physica B: Condensed Matter, 203 (1-2). pp. 169-185. ISSN 0921-4526. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)
The diffusion coefficient of decane in a lightly cross-linked peroxide vulcanizate of natural rubber (polyisoprene) has been measured by broad-line proton magnetic resonance imaging (MRI). The value of the diffusion coefficient deduced from the MRI results is higher than that obtained from conventional mass-uptake measurements. The discrepancy can be removed by assuming that the diffusion coefficient of decane increases exponentially with concentration. Proton MRI has been used for the parallel study of both the diffusing solvent and the mobility of the polymer matrix. This was achieved by exploiting the wide differences in the proton NMR relaxation times of the two components. Broad-line imaging techniques using resonant oscillating field gradients were used to overcome the short T-2 ( similar to 1 ms) of the rubber. The results show a good correlation between the ingress of the solvent and the softening of the rubber matrix.
|Subjects:||Q Science > QC Physics|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts|
|Depositing User:||P. Ogbuji|
|Date Deposited:||26 Jun 2009 07:24|
|Last Modified:||07 May 2014 11:23|
|Resource URI:||https://kar.kent.ac.uk/id/eprint/20243 (The current URI for this page, for reference purposes)|