1. 1Rubber Technology Centre, Indian Institute of Technology, Kharagpur-721302, India; e-mail: anilkb@rtc.iitkgp.ernet.in
2. 2Canuck Compounder Inc. 180 Sheldon Drive, Cambridge, Ontario, Canada N1R 6V1
3. 3Hari Shankar Singhania Elastomer and Tyre Research Institute, Jakaygram, Kankroli, Rajasthan-313342, India