Submitted on: 06 September 2009.
Revised on: 25 December 2009.
Accepted on: 14 February 2010.
___________________JOURNAL OF ELASTOMERS AND PLASTICS
Submitted on: 12 May 2004.
Revised on: 11 June 2004.
Accepted on: 23 July 2004.
___________________JOURNAL OF ELASTOMERS AND PLASTICS
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